Question

我有一个csv文件的目录（有几个子文件夹）。我想在将csv文件上传到数据库（SQL服务器）之前删除所有csv文件的前两行。我从位于一个文件夹（没有子文件夹）的一小部分csv文件开始使用以下python脚本，尽管脚本成功运行但没有从文件中删除任何行。我错过了什么：

import glob
import csv

myfiles = glob.glob("C:\Data\*.csv")
for file in myfiles:
    lines = open(file).readlines()
    open(file, 'w').writelines(lines[1:])

以下是我的示例数据：

"Title: Distribution of Nonelderly Population by Household Employment Status | The Henry J. Kaiser Family Foundation"
"Timeframe: 2015"
"Location","At Least 1 Full Time Worker","Part Time Workers","Non Workers","Total"
"United States","0.82","0.08","0.10","1.00"
"Alabama","0.79","0.06","0.15","1.00"
"Alaska","0.85","0.06","0.09","1.00"
"Arizona","0.80","0.08","0.12","1.00"
"Arkansas","0.78","0.07","0.15","1.00"
"California","0.81","0.08","0.10","1.00"

我想用编辑过的输出csv文件维护相同的目录结构。任何帮助将受到高度赞赏。

Answer 1

试试这个：

import os

# Change this to your CSV file base directory
base_directory = 'C:\\Data'    
for dir_path, dir_name_list, file_name_list in os.walk(base_directory):
    for file_name in file_name_list:
        # If this is not a CSV file
        if not file_name.endswith('.csv'):
            # Skip it
            continue
        file_path = os.path.join(dir_path, file_name)
        with open(file_path, 'r') as ifile:
            line_list = ifile.readlines()
        with open(file_path, 'w') as ofile:
            ofile.writelines(line_list[2:])

注意：请勿将文件用作变量名称，否则您将破坏内置类。

使用python删除前两行多个csv文件

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