python怎么读写文件

概述python怎么读写文件

python怎么读写文件？

读取 *** 作

# 一次性读取整个文件内容with open('致橡树.txt', 'r', enCoding='utf-8') as f:    print(f.read())# 通过for-in循环逐行读取with open('致橡树.txt', mode='r') as f:    for line in f:        print(line, end='')        time.sleep(0.5)print()# 读取文件按行读取到列表中with open('致橡树.txt') as f:    lines = f.readlines()print(lines)

写入 *** 作

import csvclass Teacher(object):    def __init__(self, name, age, Title):        self.__name = name        self.__age = age        self.__Title = Title        self.__index = -1    @property    def name(self):        return self.__name    @property    def age(self):        return self.__age    @property    def Title(self):        return self.__Titlefilename = 'teacher.csv'teachers = [Teacher('骆昊', 38, '叫兽'), Teacher('狄仁杰', 25, '砖家')]try:    with open(filename, 'w') as f:        writer = csv.writer(f)        for teacher in teachers:            writer.writerow([teacher.name, teacher.age, teacher.Title])except BaseException as e:    print('无法写入文件:', filename)else:    print('保存数据完成!')

with open('prime.txt', 'w') as f:    for num in range(2, 100):        f.write(str(num) + '\n')

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