import csvclass HandleCsv: ’’’ csv文件處理類 ’’’ def __init__(self, filename): ’’’ 構(gòu)造器 :param filename: csv文件名 ’’’ self.filename = filename def get_data(self): ’’’ 獲取csv中所有數(shù)據(jù) :return: 嵌套字典的列表 ’’’ with open(self.filename, mode=’r’, encoding=’utf-8’) as f: cb = csv.reader(f) # 實(shí)例化reader對(duì)象 header = next(cb) # 獲取表頭，并將指針轉(zhuǎn)向下一行 list_dict = [] for row in cb:list_dict.append(dict(zip(header, row))) return list_dict def get_one_row(self, row): ’’’ 獲取單行數(shù)據(jù) :param row: 指定的行號(hào) :return: 對(duì)應(yīng)行號(hào)的數(shù)據(jù) ’’’ return self.get_data()[row - 1] def write_csv(self, headers, values, data_type, mode=’w’): ’’’ 寫入數(shù)據(jù)到csv到文件中 :param headers: 表頭：列表類型 :param values: 表數(shù)據(jù)：1.嵌套元組的列表；2.嵌套字典的列表 :param data_type: 傳入的數(shù)據(jù)類型：1.’tuple’；2.’dict’ :param mode: 寫入方式，默認(rèn)寫入“w” :return: ’’’ with open(file=self.filename, mode=mode, encoding=’utf-8’, newline=’’) as f: if data_type == ’tuple’:writer = csv.writer(f) # 實(shí)例化writer對(duì)象writer.writerow(headers) # 寫入表頭writer.writerows(values) # 寫入數(shù)據(jù) elif data_type == ’dict’:writer = csv.DictWriter(f, headers) # 實(shí)例化DictWriter對(duì)象writer.writeheader() # 寫入表頭writer.writerows(values) # 寫入數(shù)據(jù) else:print('數(shù)據(jù)類型錯(cuò)誤，請(qǐng)確認(rèn)！')

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