-1

In python. If I have a string, how can I check if the string is a number or not? string1 = "1" (True) or string2 = "h" (False) string3 = "2g" (False). I tried to check if it is a letter but it doesn't work, the string also can be "," "." or " " and then it won't work.

David Walschots
  • 12,279
  • 5
  • 36
  • 59
אופיר אורן
  • 1
  • 3
  • https://stackoverflow.com/questions/354038/how-do-i-check-if-a-string-is-a-number-float and https://stackoverflow.com/questions/1265665/how-can-i-check-if-a-string-represents-an-int-without-using-try-except – cs95 Mar 19 '18 at 14:48

1 Answers1

0

Using isdigit() method:

>>> a = "0123"
>>> a.isdigit()
True

>>> b = "012a"
>>> b.isdigit()
False
marcdecline
  • 186
  • 4
  • 22