Exception in thread django-main-thread: Traceback (most recent call last): File "/opt/redis/__init__.py", line 57, in <module> VERSION = tuple(map(int_or_str, __version__.split("."))) AttributeError: 'NoneType' object has no attribute 's...
>>> tuple[(5, 2.5)] tuple[5, 2.5] >>> tuple[(5, 2.5, 'a')] tuple[5, 2.5, 'a'] >>> tuple(5, 2.5) TypeError: tuple expected at most 1 argument, got 2 元组方法 访问 元组是有序系列,故能通过索引切片的方式访问 >>> t = 1, 2, 3, 4, 5, 6, 7, 8 ,9 >>> t[0]...
>>>t=(7,3)>>>t=(7,3)>>>divmod(t)>>>divmod(t)TypeError:divmodexpected2arguments,got1 But if you scatter the tuple, it works: 但如果拆分这个元组,就可以了: >>>divmod(*t)>>>divmod(*t)(2,1) Many of the built-in functions use variable-length argument tuples. For example, ...
Exercise 1 Many of the built-in functions use variable-length argument tuples. For example, max and min can take any number of arguments: >>> max(1,2,3) 3 But sum does not. >>> sum(1,2,3) TypeError: sum expected at most 2 arguments, got 3 Write a function called sumall ...
Though it took a great deal more design iteration than anyone expected, we were able to create a tuple type that we feel is flexible enough for use in a variety of languages, regardless of syntactic support for tuples. At the same time, we've created interfaces that help describe the imp...
ValueError: too many values to unpack (expected 3) >>> s1, s2, s3, s4, s5 = t Traceback (most recent call last): ... ValueError: not enough values to unpack (expected 5, got 4) In the first example, the number of variables is less than the items in the tuple, and the erro...
>>> sum(1,2,3) TypeError: sum expected at most2 arguments, got 3 Write a function called sumall that takes any number of arguments and returns their sum. 12.5 Lists and tuples zipis a built-in function that takes two or more sequences and “zips” them into a list of tuples wher...
"Spread argument must either have a tuple type" err even when spread arg has a tuple type Bug Report 🔎 Search Terms tuple type union 2556 🕗 Version & Regression Information This changed between versions 4.2.3 and 4.3.5. Playground versions 3 through 4.2.3 reported "Expected 1-2 ...
As expected, named tuples from thetypingmodule showed significantly slower performance (28.72sec against16.28sec), meaning that they needed almost two times more to create the three named tuples as shown in the code above than the regular named tuples. ...
In this code, you use tuples as keys for the student_courses dictionary. The example works as expected. However, what will happen if the tuples that you want to use as keys contain mutable objects? Consider the following variation of the previous example:...