Introduction To Strings In Python: An Interesting Guide For 2021

INTRODUCTION

The strings in Python are the high-level and the high-programming language, which is developed for improving the application’s operations. Still, it is showing tremendous growth in the sector of data science and business intelligence. It mainly assists in understanding and clarifying the data so that the computers can understand and respond accordingly. It helps in personalizing the data as per user choice like formatting, capitalizing, splitting, finding and many more.  

1. What are strings in python?
2. Working with strings
3. Splitting with string
4. Python escape sequence
5. String Methods

1.What are strings in python?

The sequence of characters is represented as the strings in python. It is the derived data type. Strings are Immutable. This means it can’t change even after deriving as well. Many python methods such as replace, lower, join or split, modify the strings, but they don’t change the original string. They create a copy of the string, which they modify, and return it to the caller.

The data type in python is represented as the string, composed of a collection of characters. It can include alphabets, numbers, and special characters as well. For example – “Letters”, “Version” and many more. Python string is the collection of characters surrounded by single quotes, double quotes, and triple quotes. The computer does not understand the characters as it stores manipulated characters which are the combination of 0’s and 1’s.

Each character is presented in the ASCII or Unicode character. So, the Python string is also known as the collection of Unicode characters.   

2.Working with strings

How to create a string in python

By enclosing the consecutive alphabet, the string literals are written and recorded. It can be enclosed with the help of single quotes, double and triple quotes.

Accessing characters by the index of a string

The individual characters can be searched with the help of mentioning the index number in the square brackets. During the slicing process, the starting index is included but not the ending index, which helps in returning the range of characters.   

String length

Len () built-in function is used for finding the length of the string. It returns the characters which are written in the string. It is equal to the 16-bit Unicode characters in the string.

String concatenation

It connects the two strings into a single line which is represented with the sign of ‘ ’. The join method(), % operator, format() function, f-string also help in functioning the activities.

3.Splitting with string

Python’s split method is defined as splitting the string depending on the specific spectator. It mainly splits into the list. One can specify the separator and default separator in any whitespace.

The split method helps divide the string into a list of substrings in an ordered manner after that putting these substrings into the array and then returns the array. The division can be possible when searching for a pattern provided at the first parameter in the method’s call.  

This method is used with the function of str. split( ‘separator’ ).

4.Python escape sequence

The python escape sequence is describing the sequence which is after the backslash. It is acting as an escape character. It escapes the character in the string to introduce unique inclusion. Here, backslash represents the next character having a different meaning. It can be shown as double quotes or a new line. It separates the sequence having different meanings other than literal characters present there.

There are many kinds of python escape sequences such as Print Backslash (\\), Print single quote(‘), print double quote(“), ASCII formfeed (\f), ASCII linefeed(\n), ASCII verticle tab(\t), and so on.

5.String Methods

Various built-in methods are used in python to work on string objects effectively. 

Capitalize () helps convert the first alphabet in the string to uppercase and remaining characters in lowercase. It is used as string.capitalize().

For example 

S = ‘simplilearn’

X = S.capitalize()

Print(X)

!simplilearn

Strip() helps in removing the whitespace from the beginning and ending of the string. It is used as a string. strip(). 

For example

S = ‘!Simplilearn, article!’

print(S.script())

!Simplilearn, article! 

The lower() method assists in returning the string to the lower case. While the upper() method returns the string to the upper case and replaces (), the method helps replace one string with another.

Lower()- S = ‘SIMPLILEARN’

                 Print(S.lower())

                 simplilearn

Upper()- S = ‘simplilearn’

                Print(S.upper())

                 SIMPLILEARN

Replace()= REPLACE(A15, 1, 1, “B”)

A

B

14

REPLACE

15

A101

B101

16

A102

A2102

17

Adam

Saam

CONCLUSION

The strings in python are mainly described as the sequence of irreversible characters. There are many strings in python, such as replace, join, split, and many more, which are used to function the various activities. Strings in python are enclosed and accessed with the help of slicing. Its length is measured and lined up in a single one. The python escape sequence also has the backslash function, which assists in separating the characters, representing different meanings.

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