Python——指定文件格式

指定文件格式

     # 读取文件，将文件的内容构造成指定格式的数据

• 文件：wlw|123|23

  fsh|456|27

• 格式：a.["wlw|123|23","fsh|456|27"]

  b.[["wlw","123","23"],["fsh","456","27"]]

  c.[{“name":"wlw","pwd":"123","age":"23"},

  {“name":"fsh","pwd":"456","age":"23"},

  ]

a.
v = []
with open('a.txt',mode='r',encoding='utf-8') as f:
    for i in f.readlines():
        v.append(i.strip())
print(v)
​
​
b.
v = []
with open('a.txt',mode='r',encoding='utf-8') as f:
    for i in f.readlines():
        v.append(i.strip().split('|'))
print(v)
​
c.
v = []
with open('a.txt',mode='r',encoding='utf-8') as f:
    for i in f.readlines():
        dict = {}
        a,b,c = i.strip().split('|')
        dict['name'] = a
        dict['pwd'] = b
        dict['age'] = c
        v.append(dict)
print(v)
​
​

大文件的操作

用readlines() 一行一行的读
with open('a.txt',mode='r',encoding='utf-8') as file:
    for data in file.readlines():
        print(data,end="  ")
​