Global variables are a useful construct, but they should not be abused. Functions access the global scope through the <code>global</code> keyword, but this practice considerably reduce the function's readability and reusability. Instead, the global variable should be passed as a parameter to the function.

== Noncompliant Code Example

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NAME = 'Joe'

def write_name();
  global NAME   # Noncompliant
  print NAME
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== Compliant Solution

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def write_name(name);
  print name
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