YouTipPython3 Check Is Number
# Python3.x Python Check if a String is a Number
[ Python3 Examples](#)
The following example demonstrates how to check if a string is a number by creating a custom function **is_number()**:
## Example (Python 3.0+)
# -*- coding: UTF-8 -*-# Filename : test.py# author by : www..com def is_number(s): try: float(s)return True except ValueError: pass try: import unicodedata unicodedata.numeric(s)return True except(TypeError, ValueError): pass return False# Test strings and numbers print(is_number('foo'))# False print(is_number('1'))# True print(is_number('1.3'))# True print(is_number('-1.37'))# True print(is_number('1e3'))# True# Test Unicode# Arabic 5 print(is_number('Ω₯'))# True# Thai 2 print(is_number('ΰΉ'))# True# Chinese number print(is_number('Four'))# True# Copyright symbol print(is_number('Β©'))# False
We can also use an embedded if statement to achieve this:
Executing the above code produces the following output:
FalseTrueTrueTrueTrueTrueTrueTrueFalse
### More Methods
Python [isdigit()](#) method checks if all characters in the string are digits.
Python [isnumeric()](#) method checks if all characters in the string are numeric. This method works only for unicode objects.
[ Python3 Examples](#)