logo
down
shadow

Loading regular expression patterns from external source?


Loading regular expression patterns from external source?

By : Tharin Nilsri
Date : November 19 2020, 12:41 AM
it fixes the issue I am not sure what you want but have a look at this.:
If you have a file called input.txt containing \d+
code :
import re
f=open("input.txt","r")
x="asasd3243sdfdsf23234sdsdf"
print re.findall(r""+f.readline(),x)


Share : facebook icon twitter icon
Regular expression adding something in between patterns, while preserving the patterns in between

Regular expression adding something in between patterns, while preserving the patterns in between


By : Ehsan Ghazanfari
Date : March 29 2020, 07:55 AM
like below fixes the issue I suppose you forgot about 'or' operator in the source (located right before third MAX_). There is alt. version of regexp - it's more generic (because it can match and safely replace both 'and' & 'or' operators) and it has been little more optimized (because it doesn't use look-ahead/look-behind syntax):
code :
$result = preg_replace('/(\s+(and|or)\s+)(\(*MAX_)/', '<br/>$1<br/>$2', $str);
regular expression with an array of patterns (in R)

regular expression with an array of patterns (in R)


By : Ying Chen
Date : March 29 2020, 07:55 AM
hop of those help? I'd like to identify all elements of a string that match an array of patterns. How do I do this? I'd like to avoid clunky for-loops, because I'd like to have the result be invariant to the order in which I specify the patterns. , Use sapply:
code :
> sapply(regex, grepl, words)
         a     b
[1,]  TRUE FALSE
[2,] FALSE FALSE
[3,]  TRUE  TRUE
[4,]  TRUE FALSE
[5,] FALSE FALSE
[6,] FALSE  TRUE
> grepl(paste(regex, collapse = "|"), words)
[1]  TRUE FALSE  TRUE  TRUE FALSE  TRUE
C# regular expression patterns

C# regular expression patterns


By : user1985428
Date : March 29 2020, 07:55 AM
seems to work fine Are you actually looking through the 'group' values of the match? The match will return EVERYTHING that matched, not just the things in "()" and group '0' will be everything as well.
This works as expected for me:
code :
string String1="[q:6][ilvl:70](randomword)";

Regex rules_1 = new Regex(@"(?i)\[ilvl:([0-9]{1,2})\]");
Regex rules_2 = new Regex(@"(?i)\[q:([0-9]{1,2})\]");
Regex rules_3 = new Regex(@"(?i)\(([a-zA-Z]+)\)");

var match1 = rules_1.Match(String1);
var match2 = rules_2.Match(String1);
var match3 = rules_3.Match(String1);

var value1 = match1.Groups[1].Value;
var value2 = match2.Groups[1].Value;
var value3 = match3.Groups[1].Value;
Regular expression to match one or more patterns matching another regular expression

Regular expression to match one or more patterns matching another regular expression


By : Prashanth Netha
Date : March 29 2020, 07:55 AM
around this issue I am using regular expressions for my django url configurations. I have the following regex:
code :
repeatable = r'[X]{1}[A-Z0-9]{3}:[A-Z0-9]{1}[A-Z09.-]{1,4}'
url_regex = r'^myapp/prices/?(' + re.escape(repeatable) + r')(\+' + re.escape(repeatable) + r')*/?([0-9]{0,3})/?$'

url(url_regex, views.prices, name='prices')
url(r'^myapp/prices/?([X]{1}[A-Z0-9]{3}:[A-Z0-9]{1}[A-Z09.-]{1,4})(\+?[X]{1}[A-Z0-9]{3}:[A-Z0-9]{1}[A-Z09.-]{1,4})*/?([0-9]{0,3})/?$', views.prices, name='prices'),
Finding two patterns in regular expression

Finding two patterns in regular expression


By : RaGu
Date : March 29 2020, 07:55 AM
hope this fix your issue To parse HTML in C#, you should use a HTML parser, like HtmlAgilityPack.
As for "combining" 2 patterns with capturing groups and backreferences, you should always remember that the capturing groups are numbered from left to right regardless of alternation operators, so, in your pattern, there are 4 capturing groups (with ID = 1, 2, 3, 4), thus, you need to replace \\1 with \\3.
Related Posts Related Posts :
  • Appending a column in .csv with Python/Pandas
  • How to change my result directory in Robot framework using RIDE?
  • problem with using pandas to manipulate a big text file in python
  • python-magic module' object has no attribute 'open'
  • Where goes wrong for this High Pass Filter in Python?
  • Why inserting keys in order into a python dict is faster than doint it unordered
  • flann index saving in python
  • Create new instance of list or dictionary without class
  • How can I easily convert FORTRAN code to Python code (real code, not wrappers)
  • Address of lambda function in python
  • Python adding space between characters in string. Most efficient way
  • python http server, multiple simultaneous requests
  • Disguising username & password on distributed python scripts
  • Post GraphQL mutation with Python Requests
  • Why doesnt pandas create an excel file?
  • Rolling comparison between a value and a past window, with percentile/quantile
  • How to avoid repetitive code when defining a new type in python with signature verification
  • How to configure uWSGI in order to debug with pdb (--honour-stdin configuration issue)
  • In Python, how do you execute objects that are functions from a list?
  • Python- Variable Won't Subtract?
  • Processing Power In Python
  • Python 2.7.2 - Cannot import name _random or random from sys
  • Why doesn't the Python sorted function take keyword order instead of reverse?
  • Make a function redirect to other functions depending on a variable
  • get_absolute_url in django-categories
  • Monitoring non-Celery background task with New Relic in Python
  • Feature selection with LinearSVC
  • LSTM - Predicting the same constant values after a while
  • Test the length of elements in a list
  • Django: render radiobutton with 3 columns, cost column must change according to size & quantity selected
  • Python class attributes vs global variable
  • sys.stdout.writelines("hello") and sys.stdout.write("hello")
  • is ndarray faster than recarray access?
  • Python - search through directory trees, rename certain files
  • GAE: How to build a query where a string begins with a value
  • TypeError: __init__() takes at least 2 arguments (1 given)
  • Overriding and customizing "django.contrib.auth.views.login"
  • Django : Redirect to a particular page after login
  • Python search and copy files in directory
  • pretty printing numpy ndarrays using unicode characters
  • Frequent pattern mining in Python
  • How can I make a set of functions that can be used synchronously as well as asynchronously?
  • Convert one dice roll to two dice roll
  • count occourrence in a list
  • Writing an If condition to filter out the first word
  • to read file and compare column in python
  • Install python-numpy in the Virtualenv environment
  • `.select_by_visible_text()` is failed to select element?
  • Unable to send data multiple requests in a single connection — socket error
  • Pandas HDFStore unload dataframe from memory
  • Creating a custom admin view
  • How do you get the user role of the currently logged in user in Ckan?
  • Speed up Numpy Meshgrid Command
  • Python error - name lengths
  • appending text to a global variable
  • Python Mistake - Number of letters in name
  • Searching for a sequence in a text
  • Testing logging output with pytest
  • How do I change my default working directory for Python (Anaconda) on VSCode?
  • .lower() for x in list, not working, but works in another scenario
  • shadow
    Privacy Policy - Terms - Contact Us © ourworld-yourmove.org