Python_字典创建的7种方式

# 字典的创建
# 方式1.创建一个空字典
dic = {}
print(dic)
print(type(dic))

# 方式2.赋值创建
dic = {'name': 'miaoge', 'age': 18}
print(dic)
print(type(dic))

# 方式3.关键字dict和关键字参数创建
dic = dict(name='miaoge', age=18)
print(dic)
print(type(dic))

# 方式4.把列表转成字典（列表内的元素要是元组）
l = [('name', 'miaoge'), ('age', 18)]
dic = dict(l)
print(dic)
print(type(dic))

# 方式5.利用zip函数创建一个字典
re = zip('abc', [1, 2, 3])
dic = dict(re)
print(dic)
print(type(dic))

# 方式6.通过字典推导式创建
dic = {i: i*2 for i in range(10)}
print(dic)
print(type(dic))

# 方式7.通过dict.fromkeys()创建
dic = dict.fromkeys('abcd', 'go for it')
print(dic)
print(type(dic))

# 方式8.其他创建方式
l = ['x', 1, 'y', 2, 'z', 3]
dic = dict(zip(l[::2], l[1::2]))
print(dic)
print(type(dic))