isdecimal()

All String methods
isdecimal()
Returns True if all chars are decimal ( 0 to 9) in a string, Otherwise False is returned.
my_str='12345'
print(my_str.isdecimal())      # Output is True

my_str='234ab'
print(my_str.isdecimal())      # Output is False

my_str='234.45'
print(my_str.isdecimal())      # Output is False

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

Use google to search translate 1234 to chinese , then use the output like this.
my_str='一千二百三十四'
print(my_str.isnumeric())  # True
print(my_str.isdigit())    # False 
print(my_str.isdecimal())  # False
One more example
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
isdigit() will allow only digits 0-9

All String methods


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