Posted By: Joan Venge
Does anyone know how to do convert from a string to a boolean in Python? I found this link. But it doesn’t look like a proper way to do it. I.e. using built-in functionality, etc.
The reason I’m asking this is because I learned about
int("string") from here. But when trying
bool("string") it always returns
>>> bool("False") True
Really, you just compare the string to whatever you expect to accept as representing true, so you can do this:
s == 'True'
Or to checks against a whole bunch of values:
s.lower() in ['true', '1', 't', 'y', 'yes', 'yeah', 'yup', 'certainly', 'uh-huh']
Be cautious when using the following:
>>> bool("foo") True >>> bool("") False
Empty strings evaluate to
False, but everything else evaluates to
True. So this should not be used for any kind of parsing purposes.