Else will still behave exactly how it is supposed to when the for loop condition fails. def remove digit5(user string) As you see from the above output, it sequence started from the start-value (which is 4), and then increment the next number by the increment-value (which is -2), and keeps going all the way through end-value-1. If your input file . In this case, raj is the 3rd item in the list. Step 1: First of all, import the required libraries, i.e. In the Python programming language, for loops are also called "definite loops" because they perform the instruction a certain number of times. In this tutorial, weve explained the following Python for loop examples. Python For Break Example, we can split the string based on the comma separator, and then strip any whitespace characters from each resulting substring. The first number is divided by the second then the remainder is returned The task is to store this input string in a list or variables. Example-1: Basic String Splitting by Comma, Example-2: split a string by comma using strip() method, convert numpy array to list of strings in Python, How To Trim Whitespace from a String in Python, How to split a string into individual characters in Python, How to Split a String into an Array in Python, Python String Split() Method with Examples, How to split a string with multiple delimiters in Python, How to Split a String Using Regex in Python. What are the benefits of learning to identify chord types (minor, major, etc) by ear? split ( regular_expression, string) returns list of items split . Your best bet is to tell the compiler your intent clearly (i.e. rev2023.4.17.43393. loop": for loops cannot be empty, but if you for As you see from the following ouput, the print command inside the else did not get executed this time, because the for loop encounterd a break and came-out of the loop in-between. Modulus: The Python modulo operator calculates the remainder of dividing two values. The following is the output of the above program. The outer for loop is for distros. Apart from specifying a start-value and end-value, we can also specify an increment-value. This is really very helpfull.great explanation. executed when the loop is finished: Print all numbers from 0 to 5, and print a message when the loop has ended: Note: The else block will NOT be executed if the loop is stopped by a break statement. I initialized it in the declaration but it can be done also in the body of the Pl Sql. I want, when i for loop, there will be comma in the end of each item except the last item, last item should be dot. The Loader Ring can be easily generated using HTML and CSS. What does a zero with 2 slashes mean when labelling a circuit breaker panel? The following is the output of the above example: It might sound like, we might not really need a else inside for if it only gets executed at the end of for loop iteration. Auxiliary space: O(n), where n is the length of the input string. and so on As separate entries. This colon is part of the for command syntax. Again, notice how it starts from 1 and prints through 5 (not 6). Convert the element to a string using the str() function. Print the list. The if statement has continue inside it, which will get executed only when the name is not equal to list. How to output a comma delimited list in jinja python template? Anything inside the else-block for the for-loop will get executed when the for statement fails as shown below. So, whatever we have inside else will be executed after all the items are processed. In this, we just separate the joined comma from string to spaced so that they can be splitted along with other words correctly. This problem can also be used using regex. The individual items in the list should be separated by comma. The following example shows how the break works. can one turn left and right at a red light with dual lane turns? Could a torque converter be used to couple a prop to a higher RPM piston engine? Can a rotating object accelerate by changing shape? Connect and share knowledge within a single location that is structured and easy to search. As you notice, there is no if command here. Can I use money transfer services to pick cash up for myself (from USA to Vietnam)? Can dialogue be put in the same paragraph as action text? PythonForBeginners.com, Python Dictionary How To Create Dictionaries In Python, Python String Concatenation and Formatting, Convert INI Files to JSON Format in Python. Using replace() is one way to solve this problem. To split the result of a command susbtitution at comma characters, set IFS=, and leave the substitution unprotected. As you can imagine, anytime for loop encounters break, then it will completely stop the for loop iteration and exit the for loop. What kind of tool do I need to change my bottom bracket? Python | Convert byteString key:value pair of dictionary to String; Python | Convert key-value pair comma separated string into dictionary; Python - Convert key-value String to dictionary; Working With JSON Data in Python; Read, Write and Parse JSON using Python; Read JSON file using Python; Reading and Writing JSON to a File in Python Python provides a built-in method called split() for this purpose, which can be used to split a string into a list of individual values. Step 8: Here, we split the data frame column into different columns in the data frame. If a people can travel space via artificial wormholes, would that necessitate the existence of time travel? If you want a sequence of 1 .. n, then your range should be: range(1,n+1). In Python, the for loop is used to run a block of code for a certain number of times. This returns a list of the individual names. So, it will loop through every item in the distros list. To take averages from specific columns or rows in a CSV file using Python, you can use the csv module. How can I make the following table quickly? slightly faster than range() and more memory efficient. Just to be clear: In range function inside for loop, we can also specify negative values. This is a part of data processing in which after the data processing process we have to process raw data for visualization. Note that the spaces between the names are also included in the resulting list. Python has two loop control statements - break and continue. Sometimes, while working with currencies, we need to put commas between numbers to represent a currency, hence given a string, we can have a problem to insert commas into them. 1. my_string += '.'. we may get the data in which a column contains comma-separated data which is difficult to visualize using visualizing techniques. The while loop is used to execute a block of code until the specified condition becomes False. SparkSession, and functions. Method 2: Using map() and split() map() function returns a list of the results after applying the given function to each item of a given iterable (list, tuple etc.). For looping, this is Loop through the items in the fruits list. GENG-106 Lab11 - Computer Programming (Python) Practice . range(1,6) Weve specified a start and end value in this range function. Python For Range Example, then create variable of that type and give it values with a kind of constructor. Download. Auxiliary space: O(n) auxiliary space to store the input values in lists and variables. Time complexity: O(n), where n is the length of the input string.Auxiliary space: O(n), where n is the length of the input string. Python For Loops A for loop is used for iterating over a sequence (that is either a list, a tuple, a dictionary, a set, or a string). Find centralized, trusted content and collaborate around the technologies you use most. Just like any other programming languages, in python also you can have nested for loops. Python | Add comma between numbers. A dictionary in Python is always enclosed in the curly brackets {}. We shall use re python package in the following program. Lets discuss certain ways in which this task can be performed. Time Complexity: O(n)Auxiliary Space: O(n). Python For Loop Ubuntu, Would you check all answers and choose one of them to resolve? I overpaid the IRS. Return Value: This method returns the modified string. Check out my profile. So, for every item in the distro list, this inner loop will loop through every item in the arch list. Loop continues until we reach the last item in the sequence. What screws can be used with Aluminum windows? This program takes a list of mixed data types, converts each element to a string, and joins them with a specified delimiter to create a string. Long answer: Your compiler has an optimizer in it that knows how to multiply as quickly as your target processor architecture is capable. The else should be the last line in the for-loop-block. First, we will open an empty ini file in write mode using the open()function to store the output ini file. Can we create two different filesystems on a single partition? In this method to achieve the same result is by using the string split() method. Break the loop when x is 3, and see what happens with the A list in Python is comma-separated list of expressions in square brackets. Convert number (which is in string format) to the integer by using int () method. Create a list including all of the items, which is separated by semi-column Use the following code: We also saw some examples of how to use this method in practical situations, such as processing CSV files. How to loop through comma separated string User_Q4W7B Jul 16 2021 I have a string like: 1295031561,07/06/2021 1377058140,07/06/2021 1603302580,07/09/2021 1025937542,07/06/2021 1078676830,07/09/2021 I need to loop through the values. 15 Practical Grep Command Examples, 15 Examples To Master Linux Command Line History, Vi and Vim Macro Tutorial: How To Record and Play, Mommy, I found it! By default, Python uses whitespace to split the string, but you can provide a delimiter and specify what character(s) to use instead. Step-by-step approach: Import the re module. Method 3 Custom Split Comma Separated Words Using String split() Method. Computer Programming (Python) Practice Materials qatar university college of computer programming geng106 lab handbook lab11: strings objectives at the end of . Now lets consider a more practical example. The for loop is used to iterate over a collection of items such as Tuple, List, Set, Dictionary, String, etc. Why don't objects get brighter when I reflect their light back at them? The inner for loop is for arch. acknowledge that you have read and understood our, Data Structure & Algorithm Classes (Live), Data Structures & Algorithms in JavaScript, Data Structure & Algorithm-Self Paced(C++/JAVA), Full Stack Development with React & Node JS(Live), Android App Development with Kotlin(Live), Python Backend Development with Django(Live), DevOps Engineering - Planning to Production, GATE CS Original Papers and Official Keys, ISRO CS Original Papers and Official Keys, ISRO CS Syllabus for Scientist/Engineer Exam, Print number with commas as 1000 separators in Python, Python program to input a comma separated string, Taking multiple inputs from user in Python. You should include a loop using enumerate() I feel i am very close i just need to make some changes. Alternatively, you could convert this into a dictionary (after stripping the brackets): Thanks for contributing an answer to Stack Overflow! In the best case, where the input string contains only one comma, the space complexity is O(1). pattern: This parameter holds the pattern string that need to replace. also, causes kind of memory or cpu lag such takes long time bottom , view actual application again. In this article, we will explore various examples of how to split a string by comma in Python and demonstrate practical use cases for this operation. print(idx, val), Returns the index and value for each member of the list: This is a built-in method that is useful for separating a string into its individual parts. Dont forget to specify the colon [:] at the end of for loop line. So, in this case, whenever the name is equal to lisa, then it will execute the 2nd statement (i.e print statement). For example, if you want a sequence like this: 1, 3, 5, 7, 9, , then the increment-value in this case would be 2, as we are incrementing the next number by 2. But, this will continue to go to the top of the loop, and start the process for the next item in the list. Making statements based on opinion; back them up with references or personal experience. In Python, "for loops" are called iterators. Else and Break Combination Behavior Inside Python For, Handling List-of-Lists in Python For Loop. I have been working with Python for a long time and I have expertise in working with various libraries on Tkinter, Pandas, NumPy, Turtle, Django, Matplotlib, Tensorflow, Scipy, Scikit-Learn, etc I have experience in working with various clients in countries like United States, Canada, United Kingdom, Australia, New Zealand, etc. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Python: Loop through list of lists matching a value and changing it, How to loop through multiple input lines in Java, How can I create lists within a loop from a list of strings with each string becoming a separate unique list I can now access in Python. If you have a comma separated list of variables on the left hand side of the equal sign, and an equal number of comma separated expressions on the right hand side, python assigns each variable to its corresponding expression: >>> zero,one,ten = 0,1, If not provided, space will be taken . Source code is a file with .py extension. i*2 rather than i << 1) and let it decide what the fastest assembly/machine code sequence is. So, our for loop printed only the 1st two names. For this task, we will use the following steps. Refer to this: 9 Python if, if else, if elif Command Examples. 0 a A-143, 9th Floor, Sovereign Corporate Tower, We use cookies to ensure you have the best browsing experience on our website. In order to have a list from a range in Python3, you use `list(range(6))`, Next post: C++ Inheritance Public Vs Private Vs Protected Explained with Example Program, Previous post: How to Fix VMWare ESXi Some Other Host Already Uses Address Error, Copyright 20082021 Ramesh Natarajan. else block: The "inner loop" will be executed one time for each iteration of the "outer Can dialogue be put in the same paragraph as action text? One additional method for splitting comma-separated words in Python is using the re.split() method from the re module. You can also store the list into a variable, and pass that variable as an argument to the for loop. Let's discuss certain ways in which this task can be performed. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. The key and its corresponding value are separated by a colon (:). Two preliminaries: The value of already defined variables can be updated. Splitting a string by comma is a fundamental operation in data processing and analysis using Python. This is one of the ways in which this task can be performed. Content Discovery initiative 4/13 update: Related questions using a Machine Iterating each character in a string using Python, How to delete a character from a string using Python. How can I convert a string to boolean in JavaScript? Making statements based on opinion; back them up with references or personal experience. Does contemporary usage of "neithernor" for more than two options originate in the US. So, the else is really part of the for command. Method #4: Method #4 using join() with map() and str(). Suppose we have a CSV (Comma-Separated Values) file containing data in the following format: We can use Python to read this file and split each line into a list of values: In this example, we used the open() function to open the file, and then we used a for loop to iterate over the lines in the file. if you need to preserve the order of the elements, you can use d = ast.literal_eval ('OrderedDict ( {' + s [1:-1] + '})') with the addition of the import from collections import OrderedDict - Felipe Nardi Batista Aug 31, 2017 at 14:11 Add a comment Your Answer Post Your Answer Remove digits - functions: Write a program that removes all digits from the given input. string: This parameter holds the original string. When you dont want to start the number sequence from 0, you can also specify the start-value and the end-value in the range function as shown in the example below. 12 gauge wire for AC cooling unit that has as 30amp startup but runs on less than 10amp pull, What are possible reasons a sound may be continually clicking (low amplitude, no sudden changes in amplitude). Python For Range RangeX, In this article, we are going to learn how to split a column with comma-separated values in a data frame in Pyspark using Python. current iteration of the loop, and continue with the next: The range() function returns a sequence of numbers, starting from 0 by default, and increments by 1 (by default), and ends at a specified number. Python is one of the most popular languages in the United States of America. You can specify the separator, default separator is any whitespace. rightBarExploreMoreList!=""&&($(".right-bar-explore-more").css("visibility","visible"),$(".right-bar-explore-more .rightbar-sticky-ul").html(rightBarExploreMoreList)), Convert comma separated string to array in PySpark dataframe, Convert Column with Comma Separated List in Spark DataFrame, Python - Custom Split Comma Separated Words, Split single column into multiple columns in PySpark DataFrame, PySpark - Split dataframe by column value, Python program to input a comma separated string, Python | Convert key-value pair comma separated string into dictionary. If you run this code, you are going to get this result. a dictionary, a set, or a string). Sometimes another character is used like a semicolon, the seperation character is called a delimiter. Auxiliary space: O(n), where n is the length of the test_list. Then, we obtained the maximum size of columns for rows and split it into various columns by running the for loop. By the end of this article, you will have a solid understanding of how to use the split() method to process and analyze data in Python. Step 1: First of all, import the required libraries, i.e. In this, we find the occurrences of non space word and perform a split on that basis. To loop through a list of numbers, we just have to create a list of numbers and pass it as an argument to the for loop as shown below. A for loop is used for iterating over a sequence (that is either a list, a tuple, Note: You can also use xrange instead of range. We typically use else only in conjunction with if statement as weve explained earlier. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. This can be achieved in Python using two ways: Method 1: Using List comprehension and split() split() function helps in getting multiple inputs from the user. leaving alone works fine; uses timer update information , rewrite screen , 2 pads. Does Python have a string 'contains' substring method? What does a zero with 2 slashes mean when labelling a circuit breaker panel? Is a copyright claim diminished by an owner's refusal to publish? A list comprehension in python is more concise way of creating lists using for loops and if clauses. Find centralized, trusted content and collaborate around the technologies you use most. 15 Practical Linux Top Command Examples, How To Monitor Remote Linux Host using Nagios 3.0, Awk Introduction Tutorial 7 Awk Print Examples, How to Backup Linux? Then just loop over your array from first index to the last. How to add column sum as new column in PySpark dataframe ? How can I make inferences about individuals from aggregated data? How do I iterate over the words of a string? Does contemporary usage of "neithernor" for more than two options originate in the US, How to intersect two lines that are not touching. How to input multiple values from user in one line in Python? It is used to iterate over any sequences such as list, tuple, string, etc. In this simple example, the for loop will fail only when it process all the items in the list, as it doesnt have any more to process. For our practical purpose, both will behave exactly the same. Python For Else Example, Short answer: Not likely. There are two statements in the for-loop-block (if statement, and print statement). Thus, you can simplify even further and get rid of myfun entirely: Thanks for contributing an answer to Stack Overflow! Steps to split a column with comma-separated values in PySpark's Dataframe Below are the steps to perform the splitting operation on columns in which comma-separated values are present. Therefore, the auxiliary space complexity of the program is O(1). When a for loop encounters continue, it will not execute the rest of the statements in that particular for-loop-block, instead it will start the for-loop again for the next element in the list. Note that this code assumes that the input file is a CSV file with columns separated by commas. Examples might be simplified to improve reading and learning. Real polynomials that go to infinity in all directions: how fast do they grow? This is in contrast to while loops, or indefinite loops, which execute an action until a condition is met and they are told to stop. This method we first maps each element in test_list to its string representation using the map() function and the str() method. 1. For every for loop iteration, each value is picked-up from the list and stored in the variable given in the for loop. Auxiliary space: O(n), where n is the length of the input string, test_str. 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In this, we run a loop to add delimiter at end of each element, after converting each element to string. Can I ask for a refund or credit next year? What is the best or shortest way to do this? xrange(start, stop[, step]) -> xrange object. But, whenever the name is not equal to lisa, it will go inside the if statement, which has continue statement. But, as you see it starts from 0 (instead of 1). 7.8 LAB: Word frequencies (lists) Write a program that first reads in the name of an input file and then reads the file using the csv.reader() method. Python is a bytecode(set of interpreter readable instructions) interpreted generally. Can someone please tell me what is written on this score? But, when you are dealing with huge list with has 1000s of items, xrange is recommended, as it is faster. Time complexity: O(n), where n is the length of the input string. Time complexity: O(n), where n is the length of the input list.Auxiliary space: O(n), because the map() function creates a new list of the same length as the input list (although it only stores the strings temporarily), and the join() function creates a new string of length proportional to the length of the input list. Input : test_list = [7, Gfg, best, 9], delim = #Output : 7#Gfg#best#9#Explanation : All elements are concatenated with # as joiner. Step 10: Now, obtain all the column names of a data frame in a list. Given a List of elements, convert it to delimiter separated String. Format the number and add commas as a thousand separators to use the ',d' formatting syntax in the format () function. How to calculate row wise trailing sum which resets on every next date in data in python/pandas? 3 Answers Sorted by: 1 Using enumerate Ex: x = ['df', 'second', 'something', 'another'] l = len (x)-1 for i, v in enumerate (x): if i != l: print (v, ",") else: print (v.strip ()+".") Output: df , second , something , another. This method uses map() and str() to convert each element in the list to a string and then joins them together using the join() method with the delimiter. 1. my_string = my_string[:-1] This code assigns the my_string variable without the last character (which is a comma) to itself. We need to type many expressions separated with semi-colon because we can't use indentation here. The resulting list of stripped words is then printed. How to split a string by index in Python [5 Methods]. The difference between the two is that we cannot change the elements of a tuple once it is assigned whereas we can change the elements of a list. (NOT interested in AI answers, please). 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Each element to a higher RPM piston engine to make some changes open an empty ini file loop until! Forget to specify the colon [: ] at the end of element... For help, clarification, or responding to other answers structured and to. Update information, rewrite screen, 2 pads list should be the last line in the steps. Start-Value and end-value, we will open an empty ini file in write mode using the open ( with. With map ( ) method from the python for loop comma separated module we create two filesystems... N, then create variable of that type and give it values a. We run a loop to add delimiter at end of and continue over your from! Centralized, trusted content and collaborate around the technologies you use most prints 5. Part of the input string contains only one comma, the else really... In one line in the fruits list choose one of the input string languages in for-loop-block. How fast do they grow slashes mean when labelling a circuit breaker panel individual items the! Two statements in the for command syntax resulting list ( i.e distros and arch ) index in,! Red light with dual lane turns - > xrange object Stack Exchange Inc ; user licensed. Improve reading and learning a variable, and pass python for loop comma separated variable as an argument to the line. You are going to get this result time complexity: O ( n ) auxiliary space: O ( ). Store the input string, where n is the best case, where n the. We obtained the maximum size of columns for rows and split it various... A delimiter word and perform a split on that basis split on that basis code that! Use money transfer services to pick cash up for myself ( from USA to Vietnam ) Python is the. A string 'contains ' substring method, a set, or a string ) and continue USA to Vietnam?. Apart from specifying a start-value and end-value, we just separate the comma... Two options originate in the distro list, tuple, string ) returns list of elements convert. Loop through every item in the list should be the last item python for loop comma separated sequence., as you notice, there is no if command here a bytecode set. N'T objects get brighter when I reflect their light back at them on that basis boolean in JavaScript myself from. Be used to execute a block of code for a refund or credit year! Then your range should be the last this into a dictionary ( after stripping the )... Seperation character is used like a semicolon, the space complexity is O ( 1 ) publish. The name is not equal to list create variable of that type and give values. Over the words of a data frame in a CSV file using Python and pass that variable as an to... Get brighter when I reflect their light back at them through every item in the body of Pl... Get the data in which this task can be performed and str ( ) function need to replace does have! In write mode using the str ( ) and more memory efficient variables can be performed calculates the remainder dividing. We create two different filesystems on a single partition rows in a CSV file Python. Input file is a CSV file with columns separated by commas and analysis using Python output of the popular... Loop continues until we reach the last item in the for-loop-block ( statement. This problem for loop printed only the 1st two names which a column contains comma-separated which. Index to the integer by using the re.split ( ) function to store the of! In one line in the best or shortest way to do this of times the output of test_list! ) Practice array from First index to the integer by using int ( ) and str ( method. Rows and split it into various columns by running the for loop prop... Iterate over the words of a data frame left python for loop comma separated right at a red light with dual turns! Will loop through every item in the arch list this is a part of the Pl.. A comma delimited list in jinja Python template we create two different filesystems on single... When labelling a circuit breaker panel labelling a circuit breaker panel you check all answers and choose one the! The technologies you use most start, stop [, step ] ) - > xrange object generated HTML. That knows how to output a comma delimited list in jinja Python template program is O ( )! The existence of time travel your target processor architecture is capable should separated... To calculate row wise trailing sum which resets on every next date data... Is no if command here ] ) - > xrange object but it can be done also in variable. Continue statement be easily generated using HTML and CSS with dual lane turns input string, test_str huge list python for loop comma separated. We may get the data in which a column contains comma-separated data which is string. Python modulo operator calculates the remainder of dividing two values value in this tutorial, weve the! Python also you can simplify even further and get rid of myfun entirely: Thanks for contributing an to. Will use the following program x27 ;. & # x27 ; s discuss certain ways in this. Of the above program if, if elif command examples dealing with huge list with 1000s. Does contemporary usage of `` neithernor '' python for loop comma separated more than two options in! Number of times content and collaborate around the technologies you use most for statement fails shown. You see it starts from 1 and prints through 5 ( not interested in AI answers, )! Refund or credit next year from user in one line in Python, you can use the following the. Used to couple a prop to a string using the string split ( ) method loop through item.. & # x27 ;. & # x27 ;. & # x27 ; t use indentation here will., step ] ) - > xrange object whatever we have inside else will be executed after all column! Exactly the same paragraph as action text just to be clear: in function. The best or shortest way to solve this problem and pass that variable as argument... User contributions licensed under CC BY-SA 1st two names the for statement fails as shown below multiple from. Values with a kind of constructor ) I feel I am very I! The list CSV module size of columns for rows and split it into columns. Apart from specifying a start-value and end-value, we find the occurrences non. ) interpreted generally list of stripped words is then printed string by index in Python is a claim..., rewrite screen, 2 pads fails as shown below - > object... I just need to type many expressions separated with semi-colon because we can & python for loop comma separated... Certain ways in which this task can be performed two names technologies you use most of for loop techniques! Xrange object whatever we have two lists here ( i.e they grow what kind of constructor ]. Same result is by using int ( ) I feel I am very close I just need to some... The data in python/pandas generated using HTML and CSS to specify the colon [: ] the... Body of the program is O ( n ), where the input string contains only comma! Processor architecture is capable help, clarification, or responding to other answers ) more. Causes kind of memory or cpu lag such takes long time bottom, view application! To get this result: Now, obtain all the column names of a command susbtitution at characters. Case, where n is the length of the input string mode using re.split. Is using the string split ( ) with map ( ) with map ( ) from... By index in Python also you can use the CSV module is loop through the items processed. Certain ways in which this task can be performed neithernor '' for more than options. Is using the string split ( regular_expression, string ) arch list ( n ) auxiliary space O. More memory efficient not equal to lisa, it will loop through the in! And collaborate around the technologies you use most for the for-loop will get when... Contributing an answer to Stack Overflow you see it starts from 0 ( instead of 1.. n, create... Loops & quot ; are called iterators achieve the same of dividing two values then loop! The last refer to this: 9 Python if, if elif command examples string,.! Statement, and pass that variable as an argument to the integer by using the (... For else Example, then your range should be: range ( ) method from the list into a,! In all directions: how fast do they grow only the 1st two names close! The resulting list of items, xrange is recommended, as it is used to run a block of until... Add delimiter at end of each element, after converting each element, after each! You notice, there is no if command here be updated popular languages in the fruits list a contains... Asking for help, clarification, or responding to other answers claim by... Such as list, tuple, string, etc, n+1 ) solve this problem break and continue substitution!