python学习之路---文件和异常

• 一、从文件中读取数据
• • • 逐行读取
    • 创建一个包含文件各行内容的列表
• 二、写入文件
• • 1.写入空文件
• 三、异常
• 四、存储数据
• • • 使用json.dump（）和json.load（）
• 总结

open（）中需要传入路径和编码方式

file_path = '../Tkinter/dbBase.py'
with open(file_path,encoding='utf-8') as file_object:
    content = file_object.read()
print(content)

file_path = '../Tkinter/dbBase.py'
with open(file_path,encoding='utf-8') as file_object:
    for line in file_object:
        print(line.rstrip())

file_path = '../Tkinter/dbBase.py'
with open(file_path,encoding='utf-8') as file_object:
    lines = file_object.readlines()

for line in lines:
        print(line.rstrip())

file_path = 'D:Develop  softwarePyCharmdata.txt'
with open(file_path,'a') as file_object:
    file_object.write("i am handsome")

import json
numbers = [2,3,5,7,11,13]

filename = './number.json'

with open(filename,'w') as f:
    json.dump(numbe

# 读取json文件
import json
filename = 'number.json'
with open(filename) as f:
    numbers = json.load(f)

print(numbers)

提示：这里对文章进行总结：
例如：以上就是今天要讲的内容，本文仅仅简单介绍了pandas的使用，而pandas提供了大量能使我们快速便捷地处理数据的函数和方法。