Python 2.7
我有多个文件:
文件A_01.txt文件内容:aaaa
文件A_02.txt文件内容:bbbb
文件B_01.txt文件内容:aaaB
文件B_02.txt文件内容:bbbB
文件D_01.txt文件内容内容:aaaD
文件D_02.txt文件内容内容:bbbD
我需要基于文件前缀创建“合并的”文件,
对于以A_0开头的文件,请创建合并文件merged_A.txt,并在其中放置所有以A_0开头的文件的内容,
merged_B.txt用于以B_开头的文件
所有文件相同
# get all files in folder
files = os.listdir("C:\\MTA\\mta")
for filename in files:
#get prefix
prefix = filename[0:3]
# open destination file to merge individual files into
with open(os.path.join("C:\\MTA\mta", "merged" + "_" + prefix + ".txt"), 'w') as outfile:
# go through all files and merge it into outfile
for file in files:
with open(os.path.join("C:\\MTA\mta", filename)) as infile:
outfile.write(infile.read())
outfile.write("--------------\n")
以上代码,生成合并的文件,但两个合并的文件都包含所有文件的内容
files = os.listdir("C:\\MTA\\mta")
for filename in files:
#get prefix
prefix = filename[0:3]
# open destination file to merge individual files into
with open(os.path.join("C:\\MTA\mta", prefix + "file.siem"), 'w') as outfile:
# go through all files and merge it into outfile
#for filename in files:
with open(os.path.join("C:\\MTA\mta", filename)) as infile:
outfile.write(infile.read())
outfile.write("--------------\n")
此版本仅将一个文件的内容写入合并的文件
您每次读取文件时都在写一个新文件,您需要附加一个文件。您还可以使用不必要的嵌套for循环来读取文件,而可以在外部循环中读取它们。这应该工作:
import os
# get all files in folder
files = os.listdir("C:\\MTA\\mta")
for filename in files:
#get prefix
prefix = filename[0:2]
# open destination file to merge individual files into
with open(os.path.join("C:\\MTA\\mta", "merged" + "_" + prefix + ".txt"), 'a') as outfile:
# go through all files and merge it into outfile
with open(os.path.join("C:\\MTA\\mta", filename)) as infile:
outfile.write(infile.read())
outfile.write("--------------\n")