Some collection classes are mutable. The methods that add, subtract,
or rearrange their members in place, and don’t return a specific item,
never return the collection instance itself but None.
I keep getting an error that says
I have defined a function as follows: def lyrics(): print "The very first line" print lyrics() However why does the output return None: The very first line None Answers: Thank you for visiting the Q&A section on Magenaut. Please note that all the answers may not help you solve the issue immediately. So please treat … Read more
I need a way to get a dictionary value if its key exists, or simply return None, if it does not.
My editor warns me when I compare my_var == None, but no warning when I use my_var is None.
I really do not understand, why the code def isIn(char, aStr): ms = len(aStr)/2 if aStr[ms] == char: print 'i am here now' return True elif char>aStr[ms] and not ms == len(aStr)-1: aStr = aStr[ms+1:] elif char <aStr[ms] and not ms == 0: aStr = aStr[0:ms] else: return False isIn(char, aStr) print isIn('a', 'ab') does … Read more
I have a method that sometimes returns a NoneType value. So how can I question a variable that is a NoneType? I need to use if method, for example
I imagine there is a simple solution that I am overlooking. Better that than a complicated one, right?
I am running the below code which run fine when I hard code the value
What does TypeError: 'NoneType' object is not iterable mean? Example: