列表索引超出范围错误打破python中的whiloe循环

Question

Hi I am new to python and struggling my way out. Currently ia m doing some appending excel files kind of task and here's my sample code. Getting list out of index error as according to me while loop is not breaking at rhe end of each excel file. Any help would be appreciated. Thanks:

import xlrd
import glob
import os
import openpyxl
import csv
from xlrd import open_workbook
from os import listdir
row = {}
basedir = '../files/'
files = listdir('../files')
sheets = [filename for filename in files if filename.endswith("xlsx")]
header_is_written = False

for filename in sheets:

print('Parsing {0}{1}\r'.format(basedir,filename))

worksheet = open_workbook(basedir+filename).sheet_by_index(0)


print (worksheet.cell_value(5,6))
counter = 0
while True:
    row['plan name'] = worksheet.cell_value(1+counter,1).strip()
    row_values = worksheet.row_slice(counter+1,start_colx=0, end_colx=30)

    row['Dealer'] = int(row_values[0].value)
    row['Name'] = str(row_values[1].value)
    row['City'] = str(row_values[2].value)
    row['State'] = str(row_values[3].value)
    row['Zip Code'] = int(row_values[4].value)
    row['Region'] = str(row_values[5].value)
    row['AOM'] = str(row_values[6].value)
    row['FTS Short Name'] = str(row_values[7].value)
    row['Overall Score'] = float(row_values[8].value)
    row['Overall Rank'] = int(row_values[9].value)
    row['Count of Ros'] = int(row_values[10].value)
    row['Count of PTSS Cases'] = int(row_values[11].value)
    row['% of PTSS cases'] = float(row_values[12].value)
    row['Rank of Cases'] = int(row_values[13].value)
    row['% of Not Prepared'] = float(row_values[14].value)
    row['Rank of Not Prepared'] = int(row_values[15].value)
    row['FFVt Pre Qrt'] = float(row_values[16].value)
    row['Rank of FFVt'] = int(row_values[17].value)
    row['CSI Pre Qrt'] = int(row_values[18].value)
    row['Rank of CSI'] = int(row_values[19].value)
    row['FFVC Pre Qrt'] = float(row_values[20].value)
    row['Rank of FFVc'] = int(row_values[21].value)
    row['OnSite'] = str(row_values[22].value)
    row['% of Onsite'] = str(row_values[23].value)
    row['Not Prepared'] = int(row_values[24].value)
    row['Open'] = str(row_values[25].value)
    row['Cost per Vin Pre Qrt'] = float(row_values[26].value)
    row['Damages per Visit Pre Qrt'] = float(row_values[27].value)
    row['Claim Sub time pre Qrt'] = str(row_values[28].value)
    row['Warranty Index Pre Qrt'] = str(row_values[29].value)
    counter += 1
    if row['plan name'] is None:
        break
    with open('table.csv', 'a',newline='') as f:
        w=csv.DictWriter(f, row.keys())
        if header_is_written is False:
            w.writeheader()
            header_is_written = True
        w.writerow(row)

Answer 1

In place of while True use for .

row['plan name'] = worksheet.cell_value(1 + counter, 1).strip()
row_values = worksheet.row_slice(counter + 1, start_colx=0, end_colx=30)
for values in row_values:
    row['Dealer'] = int(values.value)
    row['Name'] = str(values.value)
    ....

because while True means to run this loop infinite time.(or until it means break keyword) inside while loop
Read more about while loop

Answer 2

while True loop basically means: execute the following code block to infinity, unless a break or sys.exit statement get you out.

So in your case, you need to terminate after the lines to append the excel are over (exhausted). You have two options: check if there are more lines to append, and if not break .

A more suitable approach when writing a file is for loops. This kind of a loop terminates when it is exausted.

Also, you should consider gathering the content of the excel in one operation, and save it to a variable. Then, once you have it, create iteration and append it to csv.