python check if number
if type(variable) == int or type(variable) == float:
    isNumber = True
                                
                            python check if number
if type(variable) == int or type(variable) == float:
    isNumber = True
                                
                            is number python
var.isdigit()
#return true if all the chars in the string are numbers
#return false if not all the chars in the string are numbers
                                
                            python check if string is number
txt = "565543"
x = txt.isnumeric()
                                
                            test if character is number python string
>>> 'A'.isdigit()
False
>>> '1'.isdigit()
True
                                
                            how to check if digit in int python
s = set(str(4059304593))
print('2' in s)
                                
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