Global variables are a useful construct, but they should not be abused. Functions access the global scope through the ``++global++`` 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 ---- NAME = 'Joe' def write_name(); global NAME # Noncompliant print NAME ---- == Compliant Solution ---- def write_name(name); print name ----