字典的创建

d= {
'name':'mia', # 键值对
'gender':'False',
# 'name':'jack' # 键重复的话，会覆盖掉之前的值
}

print(d)

print(type(d))

d = {}

print(d)

print(type(d))

d = dict()

print(type(d))

新增键值对

d['height'] = 170
print(d)

获取键值对

print(d['name'])

修改键值对

d[']gender'] = True
print(d)

del d

in

print('name' in d)

字典的遍历

for i in d:
print(i,d[i])
print('*'*20)
print(d.items())
for k,v in d.items():
print(k,v)
for k in d.keys():
print(k)
for v in d.values():
print(v)

字典的常用方法

d.pop('name')
print(d)
a = d.copy()
print('a的键值对', a)
print(d.get('gender'))
d.popitem()
d.popitem()
print('pop', d)
d.update({
'age': 18,
})
print('update', d)
d.clear()
print(d)