Question

Can somebody explain to me the following (python 2.7)

Two string numbers, from a parsed file:

‘410.9’
‘410.9 ‘ (Notice the trailing space)

A_LIST = ['410.9 ']

'410.9' in '410.9 '
True

'410.9' in A_LIST
False

No problem working around this – just trying to understand why it is so.

Thanks!

Answer 1

This is correct behavior because:

  >>>'410.9'=='410.9 '
  >>>False

and when you cheking list for a membership of a certain item you are actually doing something like that:

...
for item in A_LIST:
  if item == '410.9':
    return True
...