isdigit()

my_str.isdigit())

my_str='012345'
print(my_str.isdigit())      # Output is True

my_str='12#34'
print(my_str.isdigit())      # Output is False

my_str='abc1234'
print(my_str.isdigit())      # Output is False

my_str='\u0035'              # Unicode of digit 5 
print(my_str.isdigit())      # Output is True

Difference between isnumeric(), isdigit() and isdecimal()

my_str='一千二百三十四'
print(my_str.isnumeric())  # True
print(my_str.isdigit())    # False 
print(my_str.isdecimal())  # False

my_str = '2²'
print(my_str.isnumeric())  # True
print(my_str.isdigit())    # True 
print(my_str.isdecimal())  # False

my_str = '½'
print(my_str.isnumeric())  # True
print(my_str.isdigit())    # False 
print(my_str.isdecimal())  # False

Example 1: Handling Unicode Characters

print("²".isdigit())  # Output: True (Superscript)
print("٣".isdigit())   # Output: True (Arabic numeral)

Example 2: Validating User Input

user_input = input("Enter your age: ")
if user_input.isdigit():
    print("Valid age")
else:
    print("Invalid input")

Example 3: Mixed Strings with Digits and Letters

text = "123abc"
print(text.isdigit())  # Output: False (contains letters)

Example 4: Strings with Spaces

text = "123 456"
print(text.isdigit())  # Output: False (contains spaces)

Example 5: Strings with Decimal Points

text = "12.34"
print(text.isdigit())  # Output: False (contains a decimal point)

Subhendu Mohapatra

Author & Instructor at plus2net

I write and maintain practical tutorials on Python, PHP, SQL, JavaScript, HTML, jQuery, and web development at plus2net. The tutorials focus on clear explanations, working examples, and code that readers can test and adapt while learning.

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