Python：UnboundLocalError帮助：分配前引用了局部变量

Question

I keep getting this error for a portion of my code.

Traceback (most recent call last):
File "./mang.py", line 1688, in <module>
files, tsize = logger()
File "./mang.py", line 1466, in logger
nl = sshfile(list, "nl")
UnboundLocalError: local variable 'sshfile' referenced before assignment

I haven't put the code up cause it goes back and forth between functions. I'm wondering if anyone could tell me why python is spitting this error? sshfile is not a variable it's a class.

Answer 1

You probably haven't imported the file which contains the definition of sshfile , or you need to qualify the class name with the package name. It depends on how you imported it.

What package does it come from? Where is it defined?

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Update

For anyone else reading this, after a discussion in the comments it turned out that the problem was that the name sshfile had been used further down in the function as a variable name, like this:

class sshfile:
    pass

def a():
    f = sshfile() # UnboundLocalError here
    sshfile = 0

a()

The solution is to not use a variable name that hides a class name that you need to use.