logo
down
shadow

python regex: match last instance of character followed by certain parttern


python regex: match last instance of character followed by certain parttern

By : user2948256
Date : November 14 2020, 04:48 PM
Any of those help I want to edit my code below to catch all strings which END with "_C[any letter/ any number/ or nothing]" , You just need to remove the _ from the last character class.
code :
counts_tail = re.compile('_C[\da-zA-Z_]*$')
                                     ^
                                     |
 name_list = ['chrome_PM',
             'chrome_P',
             'chromerocker_C',
             'chromebike_P1',
             'chromecar_CMale',
             'chromeone_C1254',
             'Lukate_Aids_Consumer_P']

for name in name_list:
    counts_tail = re.compile('_C[\da-zA-Z]*$')
    if counts_tail.search(name):
        print name


Share : facebook icon twitter icon
python regex: match a string with only one instance of a character

python regex: match a string with only one instance of a character


By : Abenthy
Date : March 29 2020, 07:55 AM
Hope this helps Suppose there are two strings:
code :
>>> import re
>>> onedollar = re.compile(r'^[^\$]*\$[^\$]*$')
>>> onedollar.match('$1 off delicious ham.')
<_sre.SRE_Match object at 0x7fe253c9c4a8>
>>> onedollar.match('$1 off delicious $5 ham.')
>>>
Regex match until first instance of certain character

Regex match until first instance of certain character


By : Yevette Saager
Date : March 29 2020, 07:55 AM
this will help I am trying to match a url up until a special character however the regex I am using is match the last instance when I need it to stop after the first instance. What am I doing wrong?! , You added the " into the consuming part of the pattern, remove it.
code :
.+?(?=\")
^[^"]+
Append character after each instance of a regex match in PowerShell

Append character after each instance of a regex match in PowerShell


By : onelife.
Date : March 29 2020, 07:55 AM
I hope this helps . I know this isn't the only way to handle the problem above, and definitely not the most efficient -- but I ended up doing the following.
So to restate the question, I need to parse email headers (to line), for all the smtp addresses (value between '<' and '>'), and store all the addresses in a collection after the fact.
code :
        $EMLToCol = @()

        $parseMe = $CDOMessage.to
        # select just '<emailAddress>'
        $parsed = Select-String -Pattern '(<.*?>)+' -InputObject $parseMe -AllMatches | ForEach-Object { $_.matches }
        # remove this guy '<', and this guy '>'
        $parsed = $parsed.Value | ForEach-Object {$_ -replace '<' -replace '>'}
        # add to EMLToCol array
        $parsed | ForEach-Object {$EMLToCol += $_}
Regex - Match a single instance/occurrence of a character per line

Regex - Match a single instance/occurrence of a character per line


By : Fahadk
Date : March 29 2020, 07:55 AM
To fix the issue you can do I think you want:
spaces replaced with nothing multiple dashes reduced to a single dash
code :
PS C:\> "test--asd :45; wth---notcool:  69" -replace '(?<=-)-+|\s'
test-asd:45;wth-notcool:69
python regex: match pattern in text file and assign name to each match instance

python regex: match pattern in text file and assign name to each match instance


By : user3612071
Date : March 29 2020, 07:55 AM
wish helps you First of all, your catching group was needlessly big. Now, it catches only the list of number which are then parsed as floats, and appended to a list. Also, if you work things like this, you probably don't want to create the variables themselves (like if you had things from 'a_lon' to something like 'zzzzz_lon', you would have a bad day).
code :
import re

with open('tmp.txt', 'r') as f:
    x_lons = f.read()

match = re.compile(r'\[(.*?)\]')

lons = {
    'a_lon': list(),
    'b_lon': list(),
    'c_lon': list(),
    'd_lon': list()
}

current_set_letter = 97  # 97 is the character 'a'

for m in re.finditer(match, x_lons):
    one_set = m.groups()[0]  # as we know that there is only one group here
    for num in one_set.split(r','):
        lons[f'{chr(current_set_letter)}_lon'].append(float(num))
    current_set_letter += 1

print(lons)
Related Posts Related Posts :
  • Use `tf.image.resize_image_with_crop_or_pad` to resize numpy array
  • Sum number of occurences of string per row
  • Calculating 'Diagonal Distance' in 3 dimensions for A* path-finding heuristic
  • porting PyGST app to GStreamer1.0 + PyGI
  • Connection refused in Tornado test
  • How much time does take train SVM classifier?
  • Turning a string into list of positive and negative numbers
  • Python lists get specific length of elements from index
  • python.exe version 3.3.2 64 & 32 crash while creating .exe file on win 7 64 & 32 with cx_Freeze
  • Efficient nearest neighbour search for sparse matrices
  • django filter_horizontal can't display
  • How to install FLANN and pyflann on Windows
  • How can I plot the same figure standalone and in a subplot in Matplotlib?
  • read-only cells in ipython notebook
  • filling text file with dates
  • error:AttributeError: 'super' object has no attribute 'db_type' when run "python manage.py syncdb" in django
  • python imblearn make_pipeline TypeError: Last step of Pipeline should implement fit
  • Write to csv: columns are shifted when item in row is empty (Python)
  • DuckDuckGo search returns 'List Index out of range'
  • Python function which can transverse a nested list and print out each element
  • Python installing xlwt module error
  • Python mayavi: Adding points to a 3d scatter plot
  • Making a basic web scraper in Python with only built in libraries - Python
  • How to calculate the angle of the sun above the horizon using pyEphem
  • Fix newlines when writing UTF-8 to Text file in python
  • How to convert backward slash command in python to run on Linux
  • PyCharm Code Inspection doesn't include PEP 8
  • How can I use Python namedtuples to insert rows into mySQL database
  • Increase / Decrease Mac Address in Python from String
  • Scrollable QLabel image in PyQt5
  • (Python 2.7) Access variable from class with accessor/mutator
  • Why does "from [Module] import [Something]" takes more time than "import [Module"
  • jira python oauth: how to get the parameters for authentication?
  • Python - How to specify a relative path by jumping a subdirectory?
  • Extract scientific number from string
  • Scrapy: Python cannot find the spider
  • get the values in a given radius from numpy array
  • Is it possible to duplicate a pipe in Python, so that it has one write end but two read ends?
  • Why does wget use Firefox cookies to login on an authenticated webpage?
  • python import behaviour: different objects from same file?
  • Create YoY Graph with Matplotlib
  • Safe use of eval() or alternatives - python
  • Unix change desktop background seamlessly
  • Profiling Python code that uses multiprocessing?
  • How to query a database after render_template
  • shifting right in for loop over indices in python
  • Is there a way to switch code indentation from tabs to spaces across the project, and to keep 'hg annotate' functionalit
  • Disable/Close/Quit/Exit Terminal screen from python on Geany (Ubuntu)
  • for i in xrange() not running the complete script
  • ImportError ropevim using ropevim plugin in vim
  • How to read each line from a file into list word by word in Python
  • Creating Unique Names
  • python split a string when a keyword comes after a pattern
  • Same Python code returns different results for same input string
  • Call a Flask function every few minutes
  • Python: Using Ghost for dynamic webscraping
  • How to make while iteration faster?
  • Struggling to resolve "a float is required error" in python
  • Read data with NAs into python and calculate mean row-wise
  • How to print telnet response line by line?
  • shadow
    Privacy Policy - Terms - Contact Us © ourworld-yourmove.org