Python -文件操作

#!/usr/bin/env python

import json
import csv

'''
文件操作:txt、json、csv
'''

def write_text():
    strs ='''
    1:www.runoob.com
    2:www.runoob.com
    3:www.runoob.com
    4:www.runoob.com
    5:www.runoob.com
    '''
    with open('test.txt', 'w', encoding='utf-8') as f:
        f.write(strs)

def read_text():
    strs = ''
    with open('test.txt', 'r', encoding='utf-8') as f:
        strs = f.read()
        print(strs)


def write_json():
    strs = '''
    {
        "employer": {
            "id": "001",
            "name": "左陽",
            "age": "25"
        },
        "test": {
            "id": "001",
            "name": "张三",
            "age": "25"
        }
    }
    '''
    with open('test.json', 'w', encoding='utf-8') as f:
        f.write(json.dumps(strs, indent=2, ensure_ascii=False))

def read_json():
    strs = ''
    with open('test.json', 'r', encoding='utf-8') as f:
        strs = f.read()
    strs = json.loads(strs)
    print(strs)

def write_csvdict():
    dicts = [{"id": "001","name": "张三","age": "25"}, {"id": "001","name": "左陽","age": "25"}]
    fieldnames=['id', 'name', 'age']
    with open('test.csv', 'w', encoding='utf-8') as f:
        writer = csv.DictWriter(f, fieldnames=fieldnames)
        writer.writeheader()
        writer.writerows(dicts)

def write_csv():
    dicts = [["id","name","age"], ["001","左陽","25"]]
    with open('test.csv', 'w', encoding='utf-8') as f:
        writer = csv.writer(f)
        writer.writerows(dicts)

def read_csv():
    with open('test.csv', 'r', encoding='utf-8') as f:
        reader = csv.DictReader(f)
        for r in reader:
            print(r)

def main():
    write_json()
    read_json()
    write_csv()
    read_csv()

if __name__ == '__main__':
    main()