python讀寫文件的方法

python讀寫文件的方法？這個問題可能是我們?nèi)粘W(xué)習(xí)或工作經(jīng)常見到的。希望通過這個問題能讓你收獲頗深。下面是小編給大家?guī)淼膮⒖純?nèi)容，讓我們一起來看看吧！

python怎么讀寫文件？

讀取操作

# 一次性讀取整個文件內(nèi)容
with open('致橡樹.txt', 'r', encoding='utf-8') as f:
    print(f.read())
# 通過for-in循環(huán)逐行讀取
with open('致橡樹.txt', mode='r') as f:
    for line in f:
        print(line, end='')
        time.sleep(0.5)
print()
# 讀取文件按行讀取到列表中
with open('致橡樹.txt') as f:
    lines = f.readlines()
print(lines)

寫入操作

import csv
class 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.__title
filename = 'teacher.csv'
teachers = [Teacher('駱昊', 38, '叫獸'), Teacher('狄仁杰', 25, '磚家')]
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('無法寫入文件:', filename)
else:
    print('保存數(shù)據(jù)完成!')

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

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