Python/gloss python remove dictionary items
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Python从字典中删除项目
从字典中删除项目
有几种方法可以从字典中删除项目：
例
The
pop()
方法删除具有指定键名的项目：
thisdict = {
"brand": "Ford",
"model": "Mustang",
"year": 1964
}
thisdict.pop("model")
print(thisdict)
例
The
popitem()
方法删除最后插入的项（在3.7之前的版本中，将删除随机项）：
thisdict = {
"brand": "Ford",
"model": "Mustang",
"year": 1964
}
thisdict.popitem()
print(thisdict)
例
The
del
关键字删除具有指定键名的项目：
thisdict = {
"brand": "Ford",
"model": "Mustang",
"year": 1964
}
del thisdict["model"]
print(thisdict)
例
The
del
关键字也可以完全删除字典：
thisdict = {
"brand": "Ford",
"model": "Mustang",
"year": 1964
}
del thisdict
print(thisdict) #this will cause an error because "thisdict"
no longer exists.
例
The
clear()
关键字清空字典：
thisdict = {
"brand": "Ford",
"model": "Mustang",
"year": 1964
}
thisdict.clear()
print(thisdict)
