How to Access Static Class Variables Within Methods in Python?

Accessing Static Class Variables Within Methods

When attempting to access class variables within methods, an error can occur due to namespace differences. The code snippet below illustrates this issue:

<code class="python">class Foo(object):
    bar = 1

    def bah(self):
        print(bar)  # NameError: global name 'bar' is not defined</code>

Solution

To access static class variables within methods, utilize self.bar or Foo.bar. Foo.bar creates a static variable, while self.bar creates an instance variable. Thus, the following revisions resolve the issue:

1. Access static class variable: self.bar

   <code class="python"> def bah(self):
        print(self.bar)</code>

2. Create static class variable: Foo.bar

   <code class="python">def bah(self):
        print(Foo.bar)</code>

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