2024年12月9日 · The PEP 484 -- Type Hints says that the types of elements of a tuple can be individually typed; so that you can say Tuple[str, int, float]; but a list, with List typing class can take only one type parameter: List[str], which hints that the difference of the 2 really is that the former is heterogeneous, whereas the latter intrinsically homogeneous.

2014年9月9日 · A tuple is a good way to pack multiple values into that cookie without having to define a separate class to contain them. I try to be judicious about this particular use, though. If the cookies are used liberally throughout the code, it's better to create a class because it helps document their use.

Tuples are compared position by position: the first item of the first tuple is compared to the first item of the second tuple; if they are not equal (i.e. the first is greater or smaller than the second) then that's the result of the comparison, else the second item is considered, then the third and so on. See Common Sequence Operations:

2019年4月19日 · I have a string "1,2" that I am trying to parse into (1, 2) without simply splitting based on ,. I was thinking intuitively something along the lines of: from typing import Tuple t = Tuple[int, in...

2013年12月9日 · A tuple is a sequence, just like a list, or any other kind of sequence. So, you can index it: >>> a = struct.unpack('f', 'helo') >>> b = a[0] >>> b 7.316105495173273e+28

2012年4月5日 · Note: This is asking for the reverse of the usual tuple-to-array conversion. I have to pass an argument to a (wrapped c++) function as a nested tuple. For example, the following works X = MyFunc...

2010年6月4日 · It's a specific subclass of a tuple that is programmatically created to your specification, with named fields and a fixed length. This, for example, creates a subclass of tuple, and aside from being of fixed length (in this case, three), it can be used everywhere a tuple is used without breaking. This is known as Liskov substitutability.

2009年4月15日 · A tuple is used to define a slice of data from a cube; it is composed of an ordered collection of one member from one or more dimensions. A tuple is used to identify specific sections of multidimensional data from a cube; a tuple composed of one member from each dimension in a cube completely describes a cell value.

Build another tuple-of-tuples out of another_choice, then concatenate: final_choices = (another_choice,) + my_choices Alternately, consider making my_choices a list-of-tuples instead of a tuple-of-tuples by using square brackets instead of parenthesis:

*t means "take all additional positional arguments to this function and pack them into this parameter as a tuple." def foo(*t): print(t) >>> foo(1, 2) (1, 2) **d means "take all additional named arguments to this function and insert them into this parameter as dictionary entries."