def add_to_cache(self, varname, num):
    "Add a variable to the name-to-number cache\n\n        This maintains a cache of name-to-number mappings for zVariables\n        to keep from having to query the CDF library constantly. It's mostly\n        an internal function.\n\n        Parameters\n        ==========\n        varname : bytes\n            name of the zVariable. Not this is NOT a string in Python 3!\n        num : int\n            number of the variable\n        "
    self._var_nums[varname] = num
Add a variable to the name-to-number cache

This maintains a cache of name-to-number mappings for zVariables
to keep from having to query the CDF library constantly. It's mostly
an internal function.

Parameters
==========
varname : bytes
    name of the zVariable. Not this is NOT a string in Python 3!
num : int
    number of the variable
def add_to_cache(self, varname, num):
    "Add a variable to the name-to-number cache\n\n        This maintains a cache of name-to-number mappings for zVariables\n        to keep from having to query the CDF library constantly. It's mostly\n        an internal function.\n\n        Parameters\n        ==========\n        varname : bytes\n            name of the zVariable. Not this is NOT a string in Python 3!\n        num : int\n            number of the variable\n        "
    self._var_nums[varname] = num