code: def inc(x):
      return x + 1
  
imports: from sympy.multipledispatch.dispatcher import Dispatcher, MDNotImplementedError, MethodDispatcher, halt_ordering, restart_ordering, ambiguity_register_error_ignore_dup
  from sympy.testing.pytest import raises, warns
label_desc: Use image node_id 2 for calling a global function with example usage: inc(x) and returns: unknown