>= is not working

[ShailiIntellimind]

In line number 26 of allowing_compiler.py, I replaced + operator with >= which results into following exception. "grako.exceptions.FailedPattern: (1:4) expecting '[-+]?[0-9]*\.?[0-9]+([eE][-+]?[0-9]+)?' : a >= b ^ NUMBER atom power factor term arith_expr shift_expr and_expr or_expr comparison not_test and_test or_test test arithmetic_expression"