pythonstringbooleancomparison-operators

How to check if the string is empty in Python?

Does Python have something like an empty string variable where you can do:

if myString == string.empty:

Regardless, what's the most elegant way to check for empty string values? I find hard coding "" every time for checking an empty string not as good.

Solution

  • Empty strings are "falsy" (python 2 or python 3 reference), which means they are considered false in a Boolean context, so you can just do this:

    if not myString:

    This is the preferred way if you know that your variable is a string. If your variable could also be some other type then you should use:

    if myString == "":

    See the documentation on Truth Value Testing for other values that are false in Boolean contexts.