turtle.py 文件源码

def getmethparlist(ob):
    "Get strings describing the arguments for the given object"
    argText1 = argText2 = ""
    # bit of a hack for methods - turn it into a function
    # but we drop the "self" param.
    if type(ob)==types.MethodType:
        fob = ob.im_func
        argOffset = 1
    else:
        fob = ob
        argOffset = 0
    # Try and build one for Python defined functions
    if type(fob) in [types.FunctionType, types.LambdaType]:
        try:
            counter = fob.func_code.co_argcount
            items2 = list(fob.func_code.co_varnames[argOffset:counter])
            realArgs = fob.func_code.co_varnames[argOffset:counter]
            defaults = fob.func_defaults or []
            defaults = list(map(lambda name: "=%s" % repr(name), defaults))
            defaults = [""] * (len(realArgs)-len(defaults)) + defaults
            items1 = map(lambda arg, dflt: arg+dflt, realArgs, defaults)
            if fob.func_code.co_flags & 0x4:
                items1.append("*"+fob.func_code.co_varnames[counter])
                items2.append("*"+fob.func_code.co_varnames[counter])
                counter += 1
            if fob.func_code.co_flags & 0x8:
                items1.append("**"+fob.func_code.co_varnames[counter])
                items2.append("**"+fob.func_code.co_varnames[counter])
            argText1 = ", ".join(items1)
            argText1 = "(%s)" % argText1
            argText2 = ", ".join(items2)
            argText2 = "(%s)" % argText2
        except:
            pass
    return argText1, argText2