TL;DR input function in Python 2.7, evaluates whatever your enter, as a Python expression. If you simply want to read strings, then use raw_input function in Python 2.7, which will not evaluate the read strings. If you are using Python 3.x, raw_input has been renamed to input. Quoting the Python 3.0 release notes, raw_input() was renamed to input(). That is, the new input() function reads a … Read more
ERROR: If I try to add a name to the database I get a nameerror. NameError: name ‘alan’ is not defined. What’s weird is that strings won’t work but numbers will. Sorry if my question is unclear.
Am encountering this error in Windows Command line,done a wide search but could not get a perfect answer.Please find the error below and help in solving. Thanks in Advance,
When I run this code in python 2.7, I get this error: code is:
Python 3 renamed the unicode type to str, the old str type has been replaced by bytes. You may want to read the Python 3 porting HOWTO for more such details. There is also Lennart Regebro’s Porting to Python 3: An in-depth guide, free online. Last but not least, you could just try to use the 2to3 tool to see how that translates the code for you.
Default argument values are evaluated at function define-time, but self is an argument only available at function call time. Thus arguments in the argument list cannot refer each other. It’s a common pattern to default an argument to None and add a test for that in code: