(key, default=None)
return environ.get(key, default)
Get an environment variable, return None if it doesn't exist.
    The optional second argument can specify an alternate default.
    key, default and the result are str.
Get an environment variable, return None if it doesn't exist.
    The optional second argument can specify an alternate default.
    key, default and the result are str.
Get an environment variable return None if it doesn t exist . The optional second argument can specify an alternate default . key default and the result are str .
def getenv(key, default=None):
    """Get an environment variable, return None if it doesn't exist.
    The optional second argument can specify an alternate default.
    key, default and the result are str."""
    return environ.get(key, default)
def getenv ( key , default = None ) : return environ . get ( key , default )