Split long conditional expressions to lines

Question

I have some if statements like:

def is_valid(self):     if (self.expires is None or datetime.now() < self.expires)     and (self.remains is None or self.remains > 0):         return True     return False 

When I type this expressions my Vim automatically moves and to new line with this same indent as if line . I try more indent combinations, but validating always says thats invalid syntax. How to build long if's?

Answer 1

Add an additional level of brackets around the whole condition. This will allow you to insert line breaks as you wish.

if (1+1==2   and 2 < 5 < 7   and 2 != 3):     print 'yay' 

Regarding the actual number of spaces to use, the Python Style Guide doesn't mandate anything but gives some ideas:

# No extra indentation. if (this_is_one_thing and     that_is_another_thing):     do_something()  # Add a comment, which will provide some distinction in editors # supporting syntax highlighting. if (this_is_one_thing and     that_is_another_thing):     # Since both conditions are true, we can frobnicate.     do_something()  # Add some extra indentation on the conditional continuation line. if (this_is_one_thing         and that_is_another_thing):     do_something()