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  • Python标准库之csv(1)

    1.Python处理csv文件之csv.writer()

    复制代码
    import csv
    
    def csv_write(path,data):
        with open(path,'w',encoding='utf-8',newline='') as f:
            writer = csv.writer(f,dialect='excel')
            for row in data:
                writer.writerow(row)
        return True
    复制代码

    调用上面的函数

    复制代码
    data = [
        ['Name','Height'],
        ['Keys','176cm'],
        ['HongPing','160cm'],
        ['WenChao','176cm']
    ]
    
    csv_write('test.csv',data)
    复制代码

    运行结果

    2.Python处理csv文件之csv.reader()

    复制代码
    def csv_read(path):
        data = []
        with open(path,'r',encoding='utf-8') as f:
            reader = csv.reader(f,dialect='excel')
            for row in reader:
                data.append(row)
        return data
    复制代码

    调用上面的函数

    data = csv_read('test.csv')
    print(data)

    运行结果

    [['Name', 'Height'], ['Keys', '176cm'], ['HongPing', '160cm'], ['WenChao', '176cm']]

    3.Python处理csv文件之csv.DictWriter()

    def csv_dict_write(path,head,data):
        with open(path,'w',encoding='utf-8',newline='') as f:
            writer = csv.DictWriter(f,head)
            writer.writeheader()
            writer.writerows(data)
            return True

    调用上面的函数

    复制代码
    head = ['Name','Age']
    
    data = [
        {'Name':'Keys', 'Age':28},
        {'Name':'HongPing', 'Age':29},
        {'Name':'WenChao', 'Age':15}
    ]
    
    csv_dict_write('test2.csv',head,data)
    复制代码

    运行结果

    4.Python处理csv文件之csv.DictReader()

    def csv_dict_read(path):
        with open(path,'r',encoding='utf-8') as f:
            reader = csv.DictReader(f,dialect='excel')
            for row in reader:
                print(row['Name'])

    调用上面的函数

    csv_dict_read('test2.csv')

    运行结果

    Keys
    HongPing
    WenChao
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  • 原文地址:https://www.cnblogs.com/valorchang/p/11319999.html
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