I have a value cookie that is returned from a POST call using Python.
I need to check whether the cookie value is empty or null.
Thus I need a function or expression for the if condition.
How can I do this in Python?
For example:
if cookie == NULL
if cookie == None
P.S. cookie is the variable in which the value is stored.
Try this:
if cookie and not cookie.isspace():
# the string is non-empty
else:
# the string is empty
The above takes in consideration the cases where the string is None or a sequence of white spaces.
In python, bool(sequence) is False if the sequence is empty. Since strings are sequences, this will work:
cookie = ''
if cookie:
print "Don't see this"
else:
print "You'll see this"
Source: Stackoverflow.com