Search and replace multiple file

[narendran_9]

Hi Pythonist,

I write the code in Python for search and replace the text in all XML files at current directory.
But I'm unable to find and replace the text "" as empty in all XML files. Here I want to remove the text:
z_{1 - \alpha }^2 \,\sigma _{{\rm SCR}}^2 = \sum\limits_{i = 1}^n {z_{1 - \alpha }^2 \,\sigma _i^2 } + 2\sum\limits_{i \ne }^n {\sum\limits_j^n {z_{1 - \alpha }^2 \,\rho _{ij} \,\sigma _i \,\sigma _j } } ,

as

empty
ie. re.sub(r"(.*)",r"", filePath)
whats wrong with this code and explain how and where to use the script.

And also I want to replace all starting with as and as within the element 1a for all XML files in the current directory.
Here I want to replace the text:
risk modules:1az1-α2 σSCR2=∑i=1nz1-α2 σi2+2∑i≠n∑jnz1-α2 ρij σi σj,z_{1 - \alpha }^2 \,\sigma _{{\rm SCR}}^2 = \sum\limits_{i = 1}^n {z_{1 - \alpha }^2 \,\sigma _i^2 } + 2\sum\limits_{i \ne }^n {\sum\limits_j^n {z_{1 - \alpha }^2 \,\rho _{ij} \,\sigma _i \,\sigma _j } } ,where

as

risk modules:1az1-α2 σSCR2=∑i=1nz1-α2 σi2+2∑i≠n∑jnz1-α2 ρij σi σj,where
Pls. explain how and where to use the script.

Here my main python script is:

import os, sys, shutil

mydir= os.getcwd()
#makedir = os.mkdir('out')
#path = os.getcwd()
#filename = glob.glob(os.path.join(path, '*.xml') )

findreplace = [
('–','–'),
('’','É'),
]

def replaceStringInFile(filePath):
"replaces all findStr by repStr in file filePath"
tempName=filePath+'xml'
# backupName=filePath+'~~'
input = open(filePath)
output = open(tempName,'w')

inF = open(filePath,'r')
s=unicode(inF.read())
inF.close()

for couple in findreplace:
outtext=s.replace(couple[0],couple[1])
s=outtext
outF = open(tempName,'wb')
outF.write(outtext.encode('utf-8'))
outF.close()
# shutil.copy2(filePath,backupName)
# os.remove(filePath)
# os.rename(tempName,filePath)

def myfun(dummy, dirr, filess):
for child in filess:
if '.xml' == os.path.splitext(child)[1] and os.path.isfile(dirr+'/'+child):
replaceStringInFile(dirr+'/'+child)
os.path.walk(mydir, myfun, 3)

Can anyone help me regarding the above 2 points.

Thanks in advance
Naren

[sharma_vivek82]

hi, i have used the method explaned in following link, and this helped me a lot, i am sure that this also ll help you..
http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/52250

[Michael_Smith]

Hi Pythonist,

I write the code in Python for search and replace the text in all XML files at current directory. But I'm unable to find and replace the text "" as empty in all XML files. Here I want to remove the text: z_{1 - \alpha }^2 \,\sigma _{{\rm SCR}}^2 = \sum\limits_{i = 1}^n {z_{1 - \alpha }^2 \,\sigma _i^2 } + 2\sum\limits_{i \ne }^n {\sum\limits_j^n {z_{1 - \alpha }^2 \,\rho _{ij} \,\sigma _i \,\sigma _j } } ,

as

empty ie. re.sub(r"(.*)",r"", filePath) whats wrong with this code and explain how and where to use the script.

And also I want to replace all starting with as and as within the element 1a for all XML files in the current directory. Here I want to replace the text: risk modules:1az1-α2 σSCR2=∑i=1nz1-α2 σi2+2∑i≠n∑jnz1-α2 ρij σi σj,z_{1 - \alpha }^2 \,\sigma _{{\rm SCR}}^2 = \sum\limits_{i = 1}^n {z_{1 - \alpha }^2 \,\sigma _i^2 } + 2\sum\limits_{i \ne }^n {\sum\limits_j^n {z_{1 - \alpha }^2 \,\rho _{ij} \,\sigma _i \,\sigma _j } } ,where

as

risk modules:1az1-α2 σSCR2=∑i=1nz1-α2 σi2+2∑i≠n∑jnz1-α2 ρij σi σj,where Pls. explain how and where to use the script.

Here my main python script is:

import os, sys, shutil

mydir= os.getcwd() #makedir = os.mkdir('out') #path = os.getcwd() #filename = glob.glob(os.path.join(path, '*.xml') )

findreplace = [ ('–','–'), ('’','É'), ]

def replaceStringInFile(filePath): "replaces all findStr by repStr in file filePath" tempName=filePath+'xml' # backupName=filePath+'~~' input = open(filePath) output = open(tempName,'w') inF = open(filePath,'r') s=unicode(inF.read()) inF.close()

for couple in findreplace: outtext=s.replace(couple[0],couple[1]) s=outtext outF = open(tempName,'wb') outF.write(outtext.encode('utf-8')) outF.close() # shutil.copy2(filePath,backupName) # os.remove(filePath) # os.rename(tempName,filePath)

def myfun(dummy, dirr, filess): for child in filess: if '.xml' == os.path.splitext(child)[1] and os.path.isfile(dirr+'/'+child): replaceStringInFile(dirr+'/'+child) os.path.walk(mydir, myfun, 3)

Can anyone help me regarding the above 2 points.

Thanks in advance Naren

Not sure if this will help but you should try this directory compare prog in your problem.

[Paul Thompson]

This post is over a year old. Just let it die.

[Michael_Smith]

This post is over a year old. Just let it die.

Ah sorry, I just didn't notice the date. I just fixed the link for a case it is needed to him...Not sure if this will help but you should try this soft for directory compare in your problem.

[seetharama Raju]

This code will search for the given text in all the files in directories and subdirectories recursively and replace with replace text in given directory:

Save this following peace of code to a search_and_replace_in_multiple_files.py and run.
search_and_replace_in_multiple_files.py "search_string" "replace_string" "c:\\"
it will search in entire c:\ drive all the files and where ever it finds the string it will replace.

#!/usr/bin/env python
# To search and replace a string in multiple files

import sys
import os

if len(sys.argv) < 2:
	print 'usage: %s search_text replace_text directory' \
		% os.path.basename(sys.argv[0])
	sys.exit(0)


stext = sys.argv[1]
rtext = sys.argv[2]
if len(sys.argv) == 4:
	path = os.path.join(sys.argv[3], '*')
else:
	path = '*'


print 'finding: %s and replacing with: %s' % (stext, rtext)
## Traversing through entire directory recursively.
mydir= sys.argv[3]
hole_list=[]
def myfun(s1, s2, s3):
    for file in s3:
		if ".py" in file:
			full_path_file=s2+"\\"+file
			hole_list.append(full_path_file)
os.path.walk(mydir, myfun, '')


for file in hole_list:
	r = open(file, 'r')
	file_content=r.read()
	file_content=file_content.replace(stext,rtext)
	w = open(file, 'w')
	w.write(file_content)

#self.server.osget_path()