如何从csv或txt文件中删除标头？

Question

I chose csv's specific column and converted it to txt.

The selected column name is 'id' (header) and I don't know how to remove that 'id' from txt.

This is my code..

import csv
with open('garosu_example.csv') as file:
    reader = csv.reader(file)

input_file = "garosu_example.csv"
output_file = "garosu_example.txt"

id = ['id']
selected_column_index = []

with open(input_file, 'r', newline='') as csv_in_file:
    with open(output_file, 'w', newline='/n') as csv_out_file:
        freader = csv.reader(csv_in_file)
        fwriter = csv.writer(csv_out_file)
        header = next(freader)
        for index_value in range(len(header)):
            if header[index_value] in id:
                selected_column_index.append(index_value)
        print(id)
        fwriter.writerow(id)
        for row_list in freader:
            row_list_output = []
            for index_value in selected_column_index:
                row_list_output.append(row_list[index_value])
            print(row_list_output)
            f.writer.writerow(row_list_output)

How can I remove 'id'(header) from txt file?

If I remove header in csv, output txt file is emptyT_T

Answer 1

Another way with readlines and writelines :

with open('filename.csv') as f:
    with open('no_header.csv', 'w') as f2:
        f2.writelines(f2.readlines()[1:])

Answer 2

You can skip the first line and replace the document with everything after:

with open(file) as f:
    with open("file_without_header.csv",'w') as nh:
        next(f)
        for l in f:
            nh.write(l)

Answer 3

Another way you can try is to use pandas to manipulate your csv file.

An example of using pandas to manipulate the csv file would be

import pandas as pd

df = pd.read_csv("<Your-CSV-file>", columns=["id", "name", "longitude", "latitude"])
df.drop(columns=["id"])  ## this will drop the column named id
df.to_csv("<Your-New-CSV-file-Path>", index=None, header=True)

Hope it helps.