Examples
alphabetically sorted list:
cars = ['Porsche', 'BMW', 'Volvo']
cars.sort()
Definition and Usage
By default, sort () method of the list in ascending order.
You can also have a function to determine the sort criteria.
grammar:list.sort(reverse=True|False, key=myFunc)
| parameter | description |
|---|---|
| reverse | Optional. reverse = True will list in descending order. The default is reverse = False. |
| key Optional. | Function specifies the sort criteria. |
Example 1
list in descending order:
cars = ['Porsche', 'BMW', 'Volvo']
cars.sort(reverse=True)
Example 2
sorts the list according to the length value:
# 返回值的长度的函数：
def myFunc(e):
return len(e)
cars = ['Porsche', 'Audi', 'BMW', 'Volvo']
cars.sort(key=myFunc)
Example 3
sorts the list according to dictionary "year" value dictionary:
# 返回 'year' 值的函数：
def myFunc(e):
return e['year']
cars = [
{'car': 'Porsche', 'year': 1963},
{'car': 'Audi', 'year': 2010},
{'car': 'BMW', 'year': 2019},
{'car': 'Volvo', 'year': 2013}
]
cars.sort(key=myFunc)
Example 4
list in descending order according to the length value:
# 返回值的长度的函数：
def myFunc(e):
return len(e)
cars = ['Porsche', 'Audi', 'BMW', 'Volvo']
cars.sort(reverse=True, key=myFunc)
