String in python use of split method

USE OF SPLIT() FUNCTION IN STRING COMPUTER SCIENCE 083

What is split() function? The split() method breaks up a string at the specified separator. The syntax of split() is: String_name_variable. ([separator [, maxsplit]]) Both separator and maxsplit are optional

What is separator? It is a delimiter. The string splits at the specified separator. If the separator is not specified, any whitespace (space, newline etc.)in a string is a separator.

What is maxsplit? It defines the maximum number of splits. The default value of maxsplit is -1, meaning, no limit on the number of splits.

How split() works in Python? take one example: If We Store a sentence given below in a string variable: “Welcome to the python”

If we go through the string given below: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 W e l c o m e t o t h e p y t h o n value starts from 0 for first character But we need to break the words from the s

Use of split() without any separator or maxsplit: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 W e l c o m e t o t h e p y t h o n If We use only: split() Example: nm=“Welcome to the python” print(nm.split()) ------output--------- [‘Welcome’,’to’,’the’,’python’] If the separator is not specified space work as separator

Use of split() with any separator: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 W e l c o m e ; t o ; t h e ; p y t h o n If We use only: split(“;”) Example: nm=“Welcome;to;the;python” print(nm.split(“;”)) ------output--------- [‘Welcome’,’to’,’the’,’python’] If the separator is specified its break according to those separator mentioned

Use of split() with any separator and maxsplit: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 W e l c o m e ; t o ; t h e ; p y t h o n If We use only: split(“;”,2) Example: nm=“Welcome;to;the;python” print(nm.split(“;”,2)) ------output--------- [‘Welcome’,’to’,’the;python’] If the separator is specified and maxsplit given then its break according to maxsplit

Let Us learn more about split() use: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 W e l c o m e t o t h e p y t h o n How We use split() and store output in another variable. Then What happens???? Let us understand with the help of example:

First thing that we need to know: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 W e l c o m e t o t h e p y t h o n That when we declare a variable and store string. nm=“Welcome to the python” String character when we want to read Its read according to index value character by character.

But what happens when we use method split(): 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 W e l c o m e t o t h e p y t h o n print(nm.split()) nm=“Welcome to the python” It’s break the words according to the separator, by default separator is spaces. [‘Welcome’,’to’,’the’,’python’]

But what happens when we use method split(): 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 W e l c o m e t o t h e p y t h o n [‘Welcome’,’to’,’the’,’python’] break the words from the string and display output as given below:IT Now How we access these words that break using split()

Lets first store the result using split() into another variable. 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 W e l c o m e t o t h e p y t h o n [‘Welcome’,’to’,’the’,’python’] Now let’s store the string using split() into another variable. nm=“Welcome to the python” wstr=nm.split() Now when we use print() to display wstr print(wstr)

Now if you want to display words of your choice. 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 W e l c o m e t o t h e p y t h o n If we want to display “the” Welcome Example: If we want to display On the basis of our choice How we display it. Word one by oneto the python

First thing is to know what happens to a string, after we use split() function. 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 W e l c o m e t o t h e p y t h o n Welcome Before we use split() string looks like as shown below: After we use split() its break and store as it shown below: How it is store in memory, if we go through the output. to the python[ ], , ,wstr=

On the basis of output, it store words after split() in memory as shown below. Welcome to the python[ ], , , 0 1 2 3 Welcome Store at 0 index values to Store at 1 index values the Store at 2 index values python Store at 3 index values wstr=

If we want to display “c” from the word “Welcome”. Welcome It means the 4th character from the word. to the python[ ], , , 0 1 2 3 So Before we move forward let Us understand Understand how the words store in memory after using split() logically. wstr=

How these words store logically. Welcome 0,1,2,3 are the index values as shown below: So how we display the character from each word to the python[ ], , , 0 1 2 3 Now let us understand with an easy method. wstr=

So first thing we need to understand that when we split() the string Welcome It is store in a variable as shown below: To make it more easy to understand to the python[ ], , , 0 1 2 3 wstr=

Welcome to the python[ ], , , 0 1 2 3 To make it more easy to understand columns rows 0 1 2 3 4 5 6 0 W e l c o m e 1 t o 2 t h e 3 p y t h o n So 0 is for first row So 1 is for Second row So 2 is for third row So 3 is for fourth row wstr=

Welcome to the python[ ], , , 0 1 2 3 Example: If we want to display “Welcome” columns rows 0 1 2 3 4 5 6 0 W e l c o m e 1 t o 2 t h e 3 p y t h o n So 0 is for first row So 1 is for Second row So 2 is for third row So 3 is for fourth row wstr= Welcome

Welcome to the python[ ], , , 0 1 2 3 Example: If we want to display “c” from a “Welcome” columns rows 0 1 2 3 4 5 6 0 W e l c o m e 1 t o 2 t h e 3 p y t h o n So 0 is for first row So 1 is for Second row So 2 is for third row So 3 is for fourth row wstr=

Welcome to the python[ ], , , 0 1 2 3 columnsrows 0 1 2 3 4 5 6 0 W e l c o m e 1 t o 2 t h e 3 p y t h o n So 0 is for first row So 1 is for Second row So 2 is for third row So 3 is for fourth row wstr= So how we display “c” from a “Welcome” print(wstr[ ]0 ) Welcome So this part is for row number.

So if we want to display “c” from the word “Welcome” print(wstr[ ]0 ) columns rows 0 1 2 3 4 5 6 0 W e l c o m e 1 t o 2 t h e 3 p y t h o n We need row number with column number also. [ ]3 So the syntax is: variablename[RowNo][ColNo] So we add one more [ ] brackets with wstr

So lets take some more examples: print(wstr[ ][ ]) columns rows 0 1 2 3 4 5 6 0 W e l c o m e 1 t o 2 t h e 3 p y t h o n Display “python” first character “p” Display “the” 3rd character “e” print(wstr[ ][ ]) 3 0 2 2 Ans: p Ans: e

So you must know that if string is : “Hello now you know how to use it in python program” Variable nm store the string given below: If you use split() wstr=nm.split() And use print: print(wstr) ----OUTPUT----- [‘Hello’,’now’,’you’,’know’,’how’,’to’,’use’,’it’,’in’,’python’,’program’]

[‘Hello’,’now’,’you’,’know’,’how’,’to’,’use’,’it’,’in’,’python’,’program’] So if we want to display ‘use’ from the string then: print(wstr[6]) use So if we want to display “k” from the word ‘know’ print(wstr[3][0])

String in python use of split method

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String in python use of split method