Python string | digits

In Python3, string.digits is a pre-initialized string used as string constant. In Python, string.digits will give the lowercase letters ‘0123456789’.

Syntax : string.digits

Parameters : Doesn’t take any parameter, since it’s not a function.

Returns : Return all digit letters.

Note : Make sure to import string library function inorder to use string.digits

Code #1 :

# import string library function
import string

# Storing the value in variable result
result = string.digits

# Printing the value
print(result)

Output :

0123456789

Code #2 : Given code checks if the string input has only digit letters

# importing string library function
import string

# Function checks if input string
# har only digits or not
def check(value):
    for letter in value:

        # If anything other than digit
        # letter is present, then return
        # False, else return True
        if letter not in string.digits:
            return False
    return True

# Driver Code
input1 = "0123 456 789"
print(input1, "--> ",  check(input1))

input2 = "12.0124"
print(input2, "--> ", check(input2))

input3 = "12345"
print(input3, "--> ", check(input3))

Output:

0123 456 789 -->  False
12.0124 -->  False
12345 -->  True

Applications :
The string constant digits can be used in many practical applications. Let’s see a code explaining how to use digits to generate strong random passwords of given size.

# Importing random to generate
# random string sequence
import random

# Importing string library function
import string

def rand_pass(size):

    # Takes random choices from
    # ascii_letters and digits
    generate_pass = ''.join([random.choice( string.ascii_uppercase +
                                            string.ascii_lowercase +
                                            string.digits)
                                            for n in range(size)])

    return generate_pass

# Driver Code
password = rand_pass(10)
print(password)

Output:

2R8gaoDKqn