Python String

Get the index of the last occurrence of a substring in Python: Search a word from right to left

How can we get the index of the last occurrence of a substring in Python? `google` has two `g` and the index of the last `g` is 3. python s...

Check if a string is uppercase in Python

You can check if a string is uppercase in Python. Note that a string is uppercase if all the letters are uppercase in Python. python a = 'a...

How can we subtract a string from another string in Python? Get the difference of two strings

The Python string doesn't have a subtraction operator. If you want to get the difference of strings, here is a simple and understandable way. ...

Python center() - Center a string in Python

The `center()` returns the centered string filled with the specified string. python s = 'apple' s7 = s.center(7, '$') s8 = s.center(8, ...

Python string encode() - Encode a string in Python

The encode() converts a [string](/python-string) to a bytes object. python b1 = 'abc'.encode() b2 = 'русский'.encode() b3 = 'ä'.encode() ...

Python string

A Python string is expressed with single or double quotes as follows. python s1 = 'Apple' s2 = "Microsoft" print(s1) # Apple print(s2...

Python string capitalize(), title(), lower(), upper(), swapcase(): Convert lowercase to uppercase and uppercase to lowercase

You can convert a string to titlecase, lowercase, etc in Python. python s = 'i am aN aPPle.' capitalize = s.capitalize() title = s.titl...

Python format() - How to insert values into a string

You can put values into a string in Python. python a = 'I study {} and C++.'.format('math') print(a) # I study math and C++. In t...

Python ord() and chr() - Get a character and integer value

The `ord` returns the integer value of a character in Python. python m = ord('m') n = ord('n') print(m) # 109 print(n) # 110 T...

Python f-strings - How to insert variables into a string

The Python f-strings enables inserting variables in a string. The `f` prefix represents f-string. python a = 'HTML' b = 'CSS' c = 'I st...

Reverse a string (by slicing with negative step) - Python

Here is an example to reverse a string by slicing with -1 step. python a = 'abcde' b = a[::-1] print(b) # edcba A string is a ...

Replace multiple spaces of a string with one space in Python

How can we replace multiple spaces of a string with one space in Python? Using the `replace()` as follows is incorrect. python s = 'it is...

Python string isnumeric() - How to check if a string is numeric

The `isnumeric()` checks if a string is numeric in Python. For example, `3` as a string is numeric because it can be regarded as an integer. ...

Python startswith - How to check if a string starts with another string

The `startswith()` checks if a Python string starts with a specific substring. python a = 'Microsoft' if a.startswith('M'): print('...

Convert (Parse) a string to a float in Python

Capitalize a string in Python: Convert the first letter to uppercase and other letters to lowercase

The `capitalize()` converts a word to the "capitalized" word; the first letter is uppercase and other letters lowercase. python a = 'this i...

Python string zfill() - Add (Fill) zero letters to a string

US FIPS codes have five digits and some four-digit numbers start with 0 like 05001 (Arkansas). 05001 starts with 0. So how can we get 05001 from...

Python string strip(), lstrip(), rstrip() - Remove leading and trailing spaces from a string

How can we remove whitespaces and newlines from the ends of a string? In Python, the `strip()` removes leading and trailing spaces from a string...

How to generate a secure token, password, or random string in Python (with secrets module)

This code is an example to generate a random string for secure tokens. python import secrets import string def gen_rand_str(n: int): ...

Python string digits, ascii_letters, punctuation and printable

Python `string` module has several attributes, such as digits, ascii_letters. `string.digits` is a string `0123456789`. You don't need to declar...

Python Random String: How to make a random string in Python

Following is an example to get a random string in Python. python import random import string def random_string(length: int): s =...

Python replace() - How to replace a substring

A Python string is replaced by the `replace()` like this. python s = 'Python' t = s.replace('ython', 'HP') print(t) # PHP `yth...

Python string find() - How to get the index of a substring in Python

The `find()` returns the index of a substring. python s = 'book car desk' x = s.find('book') y = s.find('car') z = s.find('desk') p...

Python string split and splitlines: Split by spaces or newlines

A Python string is split to a list of strings by the `split()`. python s = 'book-car-desk' a = s.split('-') print(a) # ['book', 'car...

Python hashlib: How to use sha256 and hexdigest

You can get the hash of a string by importing hashlib in Python. python import hashlib a = 'ABC' h = hashlib.sha256(a.encode()).hexdi...

Python substring: how to cut or slice a string in Python

A string is a kind of list so you can get a letter of it by a specific index. python a = 'Apple' print(a[0]) # A print(a[1]) # p pri...

Python Concatenate Strings (plus operator, join, f-string, itertools.repeat)

In Python, strings can be concatenated with plus symbols like common arithmetic calculations. python a = 'Apple' b = 'Book' c = a + b ...

How to check if a Python string contains the other string: find(), collections.Counter

In Python, you can check if a string contains the other string using the if statement. python s = 'Apple' if 'p' in s: print('p is ...