用python删除多个csv文件的前2行

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 2 行。 我从位于一个文件夹（无子文件夹）中的一小部分 csv 文件上开始使用以下 python 脚本，虽然脚本运行成功，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:])

这是我的示例数据：

"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"

我想与编辑后的输出 csv 文件保持相同的目录结构。 任何帮助将不胜感激。

Answer 1

尝试这个：

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：不要使用文件作为变量名，否则你会破坏内置类。