Question

How to check if a string is positive integer in Python

Answer 1

string = '90012'
 
if string.isdigit():
    print('integer')

     
     
'''
run:
 
integer
 
'''

 

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Answer 2

string = '90012'

print('948432'.isdigit()) 
print('3.14'.isdigit())
print('-5'.isdigit())
    
    
    
'''
run:

True
False
False

'''

 

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Answer 3

try:
    str = "18"
     
    n = int(str)
     
    print(n >= 0)
 
except ValueError:
    print("Not a number")    
     
    
     
 
'''
run:
 
True
 
'''

 

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