Skip to main content

How would I use a regular expression to match a string with or without parentheses at the end in Python3

I've never used regular expressions but know a little bit of the syntax after reading a bit on the python website.

I'm trying to write a regular expression that would match to entries in a text document. Each entry is on a newline.

For example here's a portion of the document I'm searching:

ABSOLVE  AH0 B Z AA1 L V
ABSOLVE(1)  AE0 B Z AA1 L V
ABSOLVED  AH0 B Z AA1 L V D
ABSOLVED(1)  AE0 B Z AA1 L V D
ABSOLVES  AH0 B Z AA1 L V Z
ABSOLVES(1)  AE0 B Z AA1 L V Z

if I had the string 'ABSOLVE' that I'm searching the document for I want to find 'ABSOLVE', 'ABSOLVE(1)', but NOT 'ABSOLVED' or anything else listed. Each line in this text document has a word followed by 2 spaces then some other data that should be collected after a match is found.

I'm just not sure if I should use $ or \b flags in an re or what. My idea was to use something like

re.sub(r'([A-Z])(.*?)(  )', r'\1\3', text)

Then just search from there. But this seems really inefficient considering I have a huge file (>100K lines). Is there a better way to use regex in this case? would I want to use re.sub() to strip the parentheses or re.search() here? It's a really big file I'm searching. Is there an expression I can use to collect the data after match until it hits a newline? I'd really appreciate any help here and just some advice for using regular expressions. Thanks



source https://stackoverflow.com/questions/71164672/how-would-i-use-a-regular-expression-to-match-a-string-with-or-without-parenthes

Labels

Labels:

Comments

Post a Comment

Popular posts from this blog

Why is my reports service not connecting?

I am trying to pull some data from a Postgres database using Node.js and node-postures but I can't figure out why my service isn't connecting. my routes/index.js file: const express = require('express'); const router = express.Router(); const ordersCountController = require('../controllers/ordersCountController'); const ordersController = require('../controllers/ordersController'); const weeklyReportsController = require('../controllers/weeklyReportsController'); router.get('/orders_count', ordersCountController); router.get('/orders', ordersController); router.get('/weekly_reports', weeklyReportsController); module.exports = router; My controllers/weeklyReportsController.js file: const weeklyReportsService = require('../services/weeklyReportsService'); const weeklyReportsController = async (req, res) => { try { const data = await weeklyReportsService; res.json({data}) console...
Post a Comment
Read more

How to show number of registered users in Laravel based on usertype?

i'm trying to display data from the database in the admin dashboard i used this: <?php use Illuminate\Support\Facades\DB; $users = DB::table('users')->count(); echo $users; ?> and i have successfully get the correct data from the database but what if i want to display a specific data for example in this user table there is "usertype" that specify if the user is normal user or admin i want to user the same code above but to display a specific usertype i tried this: <?php use Illuminate\Support\Facades\DB; $users = DB::table('users')->count()->WHERE usertype =admin; echo $users; ?> but it didn't work, what am i doing wrong? source https://stackoverflow.com/questions/68199726/how-to-show-number-of-registered-users-in-laravel-based-on-usertype
Post a Comment
Read more

ValueError: X has 10 features, but LinearRegression is expecting 1 features as input

So, I am trying to predict the model but its throwing error like it has 10 features but it expacts only 1. So I am confused can anyone help me with it? more importantly its not working for me when my friend runs it. It works perfectly fine dose anyone know the reason about it? cv = KFold(n_splits = 10) all_loss = [] for i in range(9): # 1st for loop over polynomial orders poly_order = i X_train = make_polynomial(x, poly_order) loss_at_order = [] # initiate a set to collect loss for CV for train_index, test_index in cv.split(X_train): print('TRAIN:', train_index, 'TEST:', test_index) X_train_cv, X_test_cv = X_train[train_index], X_test[test_index] t_train_cv, t_test_cv = t[train_index], t[test_index] reg.fit(X_train_cv, t_train_cv) loss_at_order.append(np.mean((t_test_cv - reg.predict(X_test_cv))**2)) # collect loss at fold all_loss.append(np.mean(loss_at_order)) # collect loss at order plt.plot(np.log(al...
Post a Comment
Read more