51 lines
1.7 KiB
Markdown
51 lines
1.7 KiB
Markdown
|
---
|
|||
|
title: Python Max Function
|
|||
|
localeTitle: Python Max函数
|
|||
|
---
|
|||
|
`max()`是Python 3中的内置函数。它返回可迭代中的最大项或两个或多个参数中的最大项。
|
|||
|
|
|||
|
## 参数
|
|||
|
|
|||
|
此函数将两个或多个数字或任何类型的iterable作为参数。在给出一个iterable作为参数时,我们必须确保iterable中的所有元素都是相同的类型。这意味着我们无法传递一个包含字符串和整数值的列表。 句法: max(iterable,\* iterables \[,key,default\]) max(arg1,arg2,\* args \[,key\])
|
|||
|
|
|||
|
有效参数:
|
|||
|
```
|
|||
|
max(2, 3)
|
|||
|
max([1, 2, 3])
|
|||
|
max('a', 'b', 'c')
|
|||
|
```
|
|||
|
|
|||
|
参数无效:
|
|||
|
```
|
|||
|
max(2, 'a')
|
|||
|
max([1, 2, 3, 'a'])
|
|||
|
max([])
|
|||
|
```
|
|||
|
|
|||
|
## 回报价值
|
|||
|
|
|||
|
返回iterable中的最大项。如果提供了两个或多个位置参数,则返回最大的位置参数。如果iterable为空并且未提供default,则引发`ValueError` 。
|
|||
|
|
|||
|
## 代码示例
|
|||
|
```
|
|||
|
print(max(2, 3)) # Returns 3 as 3 is the largest of the two values
|
|||
|
print(max(2, 3, 23)) # Returns 23 as 23 is the largest of all the values
|
|||
|
|
|||
|
list1 = [1, 2, 4, 5, 54]
|
|||
|
print(max(list1)) # Returns 54 as 54 is the largest value in the list
|
|||
|
|
|||
|
list2 = ['a', 'b', 'c' ]
|
|||
|
print(max(list2)) # Returns 'c' as 'c' is the largest in the list because c has ascii value larger then 'a' ,'b'.
|
|||
|
|
|||
|
list3 = [1, 2, 'abc', 'xyz']
|
|||
|
print(max(list3)) # Gives TypeError as values in the list are of different type
|
|||
|
|
|||
|
#Fix the TypeError mentioned above first before moving on to next step
|
|||
|
|
|||
|
list4 = []
|
|||
|
print(max(list4)) # Gives ValueError as the argument is empty
|
|||
|
```
|
|||
|
|
|||
|
![:rocket:](//forum.freecodecamp.com/images/emoji/emoji_one/rocket.png?v=2 ":火箭:") [运行代码](https://repl.it/CVok)
|
|||
|
|
|||
|
[官方文件](https://docs.python.org/3/library/functions.html#max)
|