diff options
Diffstat (limited to 'python3.html.markdown')
| -rw-r--r-- | python3.html.markdown | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/python3.html.markdown b/python3.html.markdown index 839d66fd..02745117 100644 --- a/python3.html.markdown +++ b/python3.html.markdown @@ -71,11 +71,14 @@ True and False # => False False or True # => True # Note using Bool operators with ints +# False is 0 and True is 1 +# Don't mix up with bool(ints) and bitwise and/or (&,|) 0 and 2 # => 0 -5 or 0 # => -5 0 == False # => True 2 == True # => False 1 == True # => True +-5 != False != True #=> True # Equality is == 1 == 1 # => True @@ -143,13 +146,13 @@ None # => None "etc" is None # => False None is None # => True -# None, 0, and empty strings/lists/dicts all evaluate to False. +# None, 0, and empty strings/lists/dicts/tuples all evaluate to False. # All other values are True bool(0) # => False bool("") # => False bool([]) # => False bool({}) # => False - +bool(()) # => False #################################################### ## 2. Variables and Collections @@ -491,7 +494,7 @@ next(our_iterator) # => "one" next(our_iterator) # => "two" next(our_iterator) # => "three" -# After the iterator has returned all of its data, it gives you a StopIterator Exception +# After the iterator has returned all of its data, it gives you a StopIteration Exception next(our_iterator) # Raises StopIteration # You can grab all the elements of an iterator by calling list() on it. |