Python string | digits

In Python, the string.digits constant contains all the digits from '0' to '9'. This can be very helpful when we need to work with numbers in string form. The string.digit will give the digits '0123456789'.

Let's see how to use strings.digit:

import string

# Using string.digits
dig = string.digits
print(dig)  

0123456789

Example 1: Detecting and Extracting Numbers from Mixed String

In many applications, we may need to detect and extract all numbers from a mixed string, such as extracting all the order numbers or item quantities from a report. Using string.digits, we can easily separate numbers from text.

import string

# Mixed string with numbers and text
report = "Order #45: 12 items, Order #46: 7 items"

# Extract all numbers using list comprehension
n = ''.join([ch for ch in report if ch in string.digits])

print(n)  

4512467

Example 2: Generating a Random OTP (One-Time Password)

In security applications, generating a one-time password (OTP) is a common task. Using string.digits, we can easily create a secure, random OTP by selecting digits from the string constant.

import string
import random

# Generate a 6-digit OTP
otp = ''.join(random.choices(string.digits, k=6))

print(otp)