文件读写

open(file_path, mode, buffering, encoding, error, newline, closefd, opener)

f = open（'./file.text', 'r+', encoding='utf=8'）
# 关闭文件
f.close()

f = open('./file.text', 'r', encoding='utf-8')

content = f.read()

def readline_1():
  for line in open('file.text', 'r')
    print(line)


def readline_2():
  f = open('file.text', 'r')
  for i in f.readlines():
    print(i)


def readline_3():
  f = open('file.text', 'r')
  line = f.readline()
  while line:
   print(line)
   line = f.readline()

f = open('file.text', 'w')

f.write('''


  line 1


  line 2


  line 3


''')

content = [ 'line 1', '\n', 'line 2' ]
f.writelines(content)

f = open('file.text', 'a+')
f.write('new line')

with open('file.text', 'r') as f:
  print(f.read()) # 执行结束后，文件将被自动关闭