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  1. while True: 
  2. 	try:
  3. 		abc = int(raw_input("Input a number: "))
  4. 		print("Your input is a number!")
  5. 		break
  6. 	except ValueError:
  7. 		print("Invalid number format")
Success #stdin #stdout 0.01s 9032KB
comments (?)
stdin 
a
b1
1b
1
stdout 
Input a number: Invalid number format
Input a number: Invalid number format
Input a number: Invalid number format
Input a number: Your input is a number!
https://ideone.com/jwT0NZ
language:
Python (cpython 2.7.16)
created:
8 years ago
visibility:
public

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