Tags down


How to replace multiple lines in a text file?

By : Sindijs Eizengraudin
Date : July 31 2020, 01:00 PM
I hope this helps . I think you shouldn't read your file line by line for this problem. It is not that python does not replace line breaks, but as each line ends at line break, you can't have any line matching your multi-lines content.
You could instead read whole file with content=file.read() and perform the substitution on content.
code :

Share : facebook icon twitter icon

Remove multiple lines from a text file after a specific string, then replace with new text

By : jcbaezk
Date : March 29 2020, 07:55 AM
hope this fix your issue This is notably not the fastest implementation for large files, but should work.
code :
for subdir, dirs, files in os.walk(rootdir):
    for file in files:
        with open(file, 'r') as inF:
            for line in inF:
                if 'criteria' in line: break
        f=open(file, 'a')
        Lorem_list=['Lorem Ipsum','Lorem Ipsum','Lorem Ipsum']
        #The '\n' may look strange, but I am using your previous syntax.
        #This also will result in a blank line. I would suggest revising the
        #way you place text to follow the (x+'\n') format.
        [f.write(x) for x in output]
        [f.write('\n      '+x) for x in Lorem_list]
Lorem_list=['Lorem Ipsum','Lorem Ipsum','Lorem Ipsum']
[f.write('\n      '+x) for x in Lorem_list]
    f.write("\n      Lorem Ipsum")
    f.write("\n      Lorem Ipsum")
    f.write("\n      Lorem Ipsum")

How to find and replace multiple lines in text file?

By : AwesomeZander
Date : March 29 2020, 07:55 AM
fixed the issue. Will look into that further If the file is large, you want to read and write one line at a time, so the whole thing isn't loaded into memory at once.
code :
# create a dict of find keys and replace values
findlines = open('find.txt').read().split('\n')
replacelines = open('replace.txt').read().split('\n')
find_replace = dict(zip(findlines, replacelines))

with open('data.txt') as data:
    with open('new_data.txt', 'w') as new_data:
        for line in data:
            for key in find_replace:
                if key in line:
                    line = line.replace(key, find_replace[key])

Replace multiple lines in text file

Date : March 29 2020, 07:55 AM
it should still fix some issue Copy the file over to a new one, except that within the range of text between these markers drop the replacement text instead. Then move that file to replace the original, as it may be needed judging by the attempted perl -0 -i in the question.
Note that when changing a file we have to build new content and then replace the file. There are a few ways to do this and modules that make it easier, shown further below.
code :
use warnings;
use strict;
use feature 'say';
use File::Copy 'move';

my $replacement = "replacement text";

my $file     = 'input.txt';
my $out_file = 'new_' . $file;

open my $fh_out, '>', $out_file or die "Can't open $out_file: $!";
open my $fh,     '<', $file     or die "Can't open $file: $!";

while (<$fh>) 
    if (my $range_cnt = /^\s*DIFF_COEFF\s*=/ .. /^\s*DIFF_COEFF_Q\s*=/) #/
        if ($range_cnt =~ /E0$/)
            print $fh_out $replacement;  # may need a newline
            print $fh_out $_;         
    else { 
        print $fh_out $_; 
close $fh     or die "Can't close $file: $!";      # don't overwrite original
close $fh_out or die "Can't close $out_file: $!";  # if there are problems

#move $out_file, $file or die "Can't move $file to $out_file: $!";
my $text = do {  # slurp file into a scalar
    local $/; 
    open my $fh, '<', $file or die "Can't open $file: $!"; 

$text =~ s/^\s*DIFF_COEFF\s*=.*?(\n\s*DIFF_COEFF_Q)/$replacement$1/ms;

# Change $out_file to $file to overwrite
open my $fh_out, '>', $out_file or die "Can't open $out_file: $!";
print $fh_out $text;
use Path::Tiny;
                      # NOTE: edits $file in place (changes it)
    sub { s/DIFF_COEFF=.*?(\n\s*DIFF_COEFF_Q)/$replacement$1/s } 

Replace file text between two words across multiple lines

By : user1999649
Date : March 29 2020, 07:55 AM
wish helps you As mentioned in the comments, you'll need to enable the s modifier to have the .+?part also match line breaks.
As Ansgar mentions the m isn't neccessary here, but could enhance the start by anchoring at line begin with (?<=^xstart)
code :
$raw = Get-Content $file -Raw
$raw = $raw -ireplace '(?s)(?<=start).+?(?=end)', 'YYY'
$raw | Set-Content $file
$raw = (Get-Content $file -Raw) -ireplace '(?s)(?<=start).+?(?=end)', 'YYY'
$raw | Set-Content $file

How to replace multiple lines from a text file using Powershell -replace

By : user2780292
Date : March 29 2020, 07:55 AM
To fix this issue I am writing a script changing the memory value within a configuration file. I want to search for a set specific set of lines within this file, and I tried using PowerShell to do the job. , If you want to use -Replace the following will work:
code :
$NewContent = (Get-Content "C:\Program Files\NetBrain\Worker Server\conf\rmworker.json" -Raw) -replace "(?ms)""execName"": ""BuildDynamicMap"",.*?""execCategory"": 1,.*?""maximumMemory"": 4294967296" , """execName"": ""BuildDynamicMap"",`r`n`t""execCategory"": 1,`r`n`t""maximumMemory"": 8589934592"
Related Posts Related Posts :
  • Adding quotations around words preceding a colon in Python
  • Write a class that draws an image in the center of the screen in PyGame
  • Python requirements conflict with PyPi
  • A good way to make classes for more complex playing card types than those found in a standard deck?
  • How to find the longest chain of consecutively recurring character groupings in file
  • Class variable that is an instance of itself
  • SQLAlchemy(Python)/Sequelize(Node.js) rollback transation (undo button)
  • Word2Vec compare vectors from different models with different sizes
  • Pandas: Create a table with a “dummy variable” of another table
  • How to implement Python's multiprocessing Pool to convert thousands of files
  • Remove elements from lists, code is leaving just one
  • Ensure python script isn't run as root
  • How do I sum 2 specific column rows in a DataFrame if some of the values are NaN?
  • Mocking __init__ of a class imported in file
  • How to check a greater than check in reg expression?
  • How to make the progressbar work, It freezes the window
  • How to update the state of a Toggle Button after process completion?
  • How to specify the outer product of certain axis in python?
  • multiprocessing creates zombie process even after .join()
  • Why does the robot framework add quotation marks to a command string?
  • How to extract the orderconfirmedoid from from the current url using Selenium and Python
  • How to find a sum of even numbers in range recursively?
  • How to convert list of pixel into image using python
  • How can I bind the enter key to a command while having a button do the same thing?
  • python: subsetting and renaming columns by name in list of dataframes
  • print x over y in matplotlib python
  • Python Image Processing on Captcha how to remove noise
  • Pass value to string imported from another module using f-string
  • Greatest of 3 numbers code not working for specific numbers
  • Use of function inside a for loop
  • Cant match a particular pattern in regex using OR
  • when i build the docker with pip install psycopg2 has error
  • 'import ase' does not load submodule 'ase.io'
  • I have two tuple comparison. Almost the same data. Why this error:
  • Why hasn't this list changed?
  • Scrape html data using beautifulsoup and Python
  • JupyterLab - python open() function results in FileNotFoundError
  • I'm not getting proper output for checking a string to be palindrome or not
  • alphabet split instead of word split using lists
  • Celsius to Fahrenheit method doesn't work
  • How to import a module at each execution of python?
  • find contours of thresholded image
  • How to use sleep to limit data put in logs?
  • Dataframe expanding window and applying multiple functions
  • How to get integer list from a string but not integer list?
  • Rename dataframe in Python for loop
  • Unable to fetch rows from PostGresSQL table
  • How to pass values to a function which is a list item in Python
  • Easiest way to subclass a widget in Python for use with Qt Designer
  • Finding the cumulative sum of a list
  • Pandas Dataframe Update Rows
  • How to solve this loop problem in python flask?
  • Python Opencv: Filter Image for Text Detection
  • Python - Count Numbers of Different Digits in String
  • How to update, rotate and display a ply file with python?
  • Grouping by and filtering for column value containing string and aggregate function?
  • pandas group by day or week or month for timestamp
  • Django converting year to a full date
  • Clunky/slow dragging functionality on my analog clock project
  • Setting the labels of colorbar matplotlib
  • shadow
    Privacy Policy - Terms - Contact Us © voile276.org