读取文件并将特定字段输出到 CSV 文件

Question

我正在尝试根据关键字搜索数据并将该数据导出到 Excel 或文本文件。

当我“打印”变量/列表时，它没有问题。当我尝试将数据输出到文件时，它只输出最后一个条目。我认为迭代有问题，但我无法弄清楚。

import xlsxwriter

#Paths
xls_output_path = 'C:\\Data\\'   
config = 'C:\\Configs\\filename.txt'

excel_inc = 0  #used to increment the excel columns so not everything 
               #is written in "A1"

lines = open(config,"r").read().splitlines()

search_term = "ACL"



for i, line in enumerate(lines):
    if search_term in line:       
        split_lines = line.split(' ')   #Split lines via a space.
        linebefore = lines[i - 1]      #Print the line before the search term
        linebefore_split = linebefore.split(' ') #Split the line before via 
                                                 #space
        from_obj = linebefore_split[2]   #[2] holds the data I need
        to_object = split_lines[4]       #[4] holds the data I need
        print(len(split_lines))       #Prints each found line with no 
                                       #problem.

        excel_inc = excel_inc + 1      #Increments for column A so not all of 
                                       #the data is placed in A1
        excel_inc_str = str(excel_inc) #Change type to string so it can 
                                       #concatenate.


        workbook = xlsxwriter.Workbook(xls_output_path + 'Test.xlsx') #Creates the xls file
        worksheet = workbook.add_worksheet()

        worksheet.write('A' + excel_inc_str, split_lines[4]) #Write data from 
                                                             #split_lines[4] 
                                                             #to column A
workbook.close()

我创建了这个脚本，所以它会在“config”文件中找到关键字“ACL”的所有行。 然后它能够​​打印之前的行和找到数据的实际行。这很好用。 我的下一步是将数据输出到 Excel 电子表格。这就是我卡住的地方。 该脚本仅打印 A 列第 10 行中的最后一项。 我需要帮助弄清楚为什么它会正确打印数据，但它不会将其输出到 excel 电子表格甚至 .txt 文件中。

Answer 1

试试这个 - 我将你的工作簿和工作表定义移到循环之外，所以它不会一直被重新定义。

import xlsxwriter

#Paths
xls_output_path = 'C:\\Data\\'   
config = 'C:\\Configs\\filename.txt'

excel_inc = 0  #used to increment the excel columns so not everything 
               #is written in "A1"

lines = open(config,"r").read().splitlines()

search_term = "ACL"

workbook = xlsxwriter.Workbook(xls_output_path + 'Test.xlsx') #Creates the xls file
worksheet = workbook.add_worksheet()

for i, line in enumerate(lines):
    if search_term in line:       
        split_lines = line.split(' ')   #Split lines via a space.
        linebefore = lines[i - 1]      #Print the line before the search term
        linebefore_split = linebefore.split(' ') #Split the line before via 
                                                 #space
        from_obj = linebefore_split[2]   #[2] holds the data I need
        to_object = split_lines[4]       #[4] holds the data I need
        print(len(split_lines))       #Prints each found line with no 
                                       #problem.

        excel_inc = excel_inc + 1      #Increments for column A so not all of 
                                       #the data is placed in A1
        excel_inc_str = str(excel_inc) #Change type to string so it can 
                                       #concatenate.




        worksheet.write('A' + excel_inc_str, split_lines[4]) #Write data from 
                                                             #split_lines[4] 
                                                             #to column A
workbook.close()