NameError: name 'Tree' is not defined That's because the class has not been defined yet at this point. The workaround is using so called Forward Reference, i.e. wrapping a class name in a …

Why do I get "NameError: name '...' is not defined" (or a SyntaxError, or a number instead of a string) when using the input function (in Python 2.x)? (15 answers)

File "<input>", line 1, in <module> File "<string>", line 1, in <module> NameError: name 'dummy' is not defined Security considerations with Python 2.7's input: Since whatever user types is …

Mar 21, 2022 · NameError: name 'i' is not defined - Why does this happen? Asked 3 years, 7 months ago Modified 2 years, 4 months ago Viewed 17k times

Python NameError, variable 'not defined' Asked 9 years, 4 months ago Modified 9 years, 4 months ago Viewed 134k times

input_var = input ("Press 'E' and 'Enter' to Exit: ") NameError: name 'e' is not defined I am using Python 2.5. How I can overcome this error?

I dont know much about python. I want to start working on the project and the setup instruction says: pip install -r requirements-dev.txt Simple enougth. The problem is that I get this: Downlo...

The behavior of Python's __file__ is much different than C's __FILE__. The C version will give you the original path of the source file. This is useful in logging errors and knowing which source …

NameError: name 'variable' is not defined La razón es que esa sintaxis por la que asignas variables en la propia declaración de la clase, para lo que sirve es para crear "atributos de …

NameError: name 'age' is not defined Asked 9 years, 8 months ago Modified 9 years, 8 months ago Viewed 5k times