Python数组变量分配

时间:2019-03-11 13:48:22

标签: python arrays loops

我在Python中使用以下格式的以下数组:

Array[('John', '123'), ('Alex','456'),('Nate', '789')]

有没有一种方法可以按如下所示按字段分配数组变量?

Name = ['john', 'Alex', 'Nate']
ID = ['123', '456', '789']

2 个答案:

答案 0 :(得分:1)

本着“明确胜于隐含”的精神:

data = [('John', '123'), ('Alex', '456'), ('Nate', '789')]

names = [x[0] for x in data]
ids = [x[1] for x in data]


print(names) # prints ['John', 'Alex', 'Nate']
print(ids)  # prints ['123', '456', '789']

或更确切地说:

data = [('John', '123'), ('Alex', '456'), ('Nate', '789')]
NAME_INDEX = 0
ID_INDEX = 1

names = [x[NAME_INDEX] for x in data]
ids = [x[ID_INDEX] for x in data]

答案 1 :(得分:0)

这是使用zip的紧凑方法:

lst = [('John', '123'), ('Alex','456'),('Nate', '789')]

name, userid = list(zip(*lst))

print(name)   # ('John', 'Alex', 'Nate')
print(userid)  # ('123', '456', '789')

请注意,结果存储在(不可变的)tuple s中;如果您需要{mutable)list,则需要投射。