Tagged Questions
1
vote
0answers
9 views
Re-ordering groups in regex findalls
When I was trying to answer this question: regex to split %ages and values in python I noticed that I had to re-order the groups from the result of findall. For example:
data = """34% passed 23% ...
-2
votes
0answers
10 views
CPU efficient string matching for the following URLs in TCL
I need a cpu efficient method match a random url to the following pattern. You can have https://abc.xyz.SomethingElse or https://abc.Something.xyz.SomethingElse in TCL. Would like to avoid regex if ...
-1
votes
3answers
28 views
regex to split %ages and values in python
Hello I am new to python and regex.
I have a large CSV file which has a field like, %age composition that contains values such as:
'34% passed 23% failed 46% deferred'
How would you split this ...
-1
votes
0answers
41 views
how can i validate chinese characters in a string which is mixed both chinese plus english
i have checked this post here but i have hard time to understand it and use it..i would like to validate a text file which has chinese, english and numerals. i have to check whether the chinese ...
1
vote
1answer
28 views
Django URL regex “is not a valid regular expression” error
I'm having a bit of trouble configuring the following url. I want it to be able to match a pages which start off with a category and then finish with a slug, examples:
/category1/post1/
...
1
vote
2answers
18 views
Scrapy date capture with regular expression
I have a working regular expression that is parsing a date below:
(?:(September|April|June|November) +(0?[1-9]|[12]\d|30), *((?:19|20)\d\d))|(?:(January|March|May|July|August|October|December) ...
1
vote
2answers
24 views
RE match fail in python, confuse with the result on regex101
http://regex101.com/r/oU6eI5/1 , test here seam works, but when i put in Python, match whole str.
str = galley/files/tew/tewt/tweqt/
re.sub('^.+/+([^/]+/$)', "\1", str)
i want get "tweqt/"
0
votes
3answers
38 views
replace a regex match group with a dictionary value in python
I'm working on a hobby project to write a clone of a popular Amiga BBS software program. One of the functions in this program was using a short code feature, much like BBCodes on forums, to change ...
0
votes
3answers
35 views
Python regex to match “spaced out” words
When dealing with text files that have been produced using optical character recognition (OCR) I often come across lines or parts of lines
t h a t a r e s p a c e d o u t l i k e t h i s.
I ...
1
vote
1answer
50 views
Python regular expression to match a file name. Using os.walk() to get a file name
I'm using os.walk() to get files name. What I need to do is to create a list with files name that match following patterns:
if '*' will match all files.
if 'h*' will match all files beginning with ...
0
votes
2answers
31 views
How can I use re's special characters when splitting a string?
Suppose I have this variable, named string.
string = "Hello(There|World!!"
Since I want to split on multiple delimiters, I'm using re.split() to do the job. Unfortunately, this string contains ...
1
vote
1answer
41 views
Can anyone see why my python regex search is only outputtings “0”s?
I'm working on a python program to extract all the tags within a kml file.
import re
KML = open('NYC_Tri-State_Area.kml','r')
NYC_Coords = open('NYC_Coords.txt', 'w')
coords = ...
0
votes
1answer
41 views
Validate a two characters code using python
I want to verify that a string is a valid code; in particular, it should be a pair of two characters. Think of a 2-chars country code. Using the re module I came up with the following:
valid = ...
-3
votes
2answers
35 views
Find a word from text file and print part of the line using regular expression
I want to find a word from a text file and print the next word on that line using regular expression in python.
For Ex:
my name is xyz.
i like science.
i like to play volleyball.
This ...
-1
votes
5answers
27 views
Regular expression which gets the last part after a special character [on hold]
I am new to programming need some help regarding regular expressions.
I have a string like this: xxxx.yyyy.zzzzz.mystring
What I need from the above string is "mystring", so I am looking for a ...
1
vote
7answers
43 views
Regular expressions: How to filter for two things at once
I want a regular expression that will return all words in a list that contain only consonants and no special characters.
The following Python code works:
import re
words = ["xkcd", "word", "xml-"]
...
-1
votes
1answer
29 views
Split array byte string in Python
I'm trying to split a string of bytes like this:
'\xf0\x9f\x98\x84 \xf0\x9f\x98\x83 \xf0\x9f\x98\x80 \xf0\x9f\x98\x8a \xe2\x98\xba \xf0\x9f\x98\x89 \xf0\x9f\x98\x8d \xf0\x9f\x98\x98 \xf0\x9f\x98\x9a ...
0
votes
1answer
16 views
Regex throwing up sre_constants error
I am parsing the following data structure:
var teamFixtures = new WS.Panel(fixturesConfig);
teamFixtures.load([300, [[883762,1,'23-08-2014','17:00',300,'Atalanta',0,777,'Pisa',1,'2 : 0','1 : ...
1
vote
2answers
33 views
Python - regex - sorting Japanese addresses
I have to scrub a lot of Japanese addresses. This regex works on two regex test sites but I don't get the same results in my Windows terminal; I'm using Python 2.7.8 on Windows 7.
Here are the ...
6
votes
1answer
49 views
Security of regular expressions [duplicate]
Say that I want to let a user input whichever regular expression he wants, and a string to match, and I will check whether it matches using Python's re.compile. Is that secure? Is there a way for a ...
-2
votes
2answers
27 views
Match everything inside multiple instances of a tag in a string in python
Sample string:
str = "<sec>John</sec> said hi to a woman (named <sec>Mary</sec>)"
Result should be a list:
res = [John, Mary]
I should really have learned regex by now.
-2
votes
1answer
29 views
python regex to match lines not with quotes
I have a regex which is used to match the text, but i need to match the text leaving the text within quotes.
Consider:
I have a pen1
I have a pen1 "green"
In fact i need to leave the text within ...
-1
votes
4answers
47 views
Parse a string from a string with regex
I need a regex that will parse a string from a string.
To show you what I mean, imagine that the following is the content of the string to parse:
"a string" ... \\"another \"string\"\\" ... "yet ...
2
votes
2answers
64 views
What Regex to use in this example
I am parsing a string that I know will definitely only contain the following distinct phrases that I want to parse:
'Man of the Match'
'Goal'
'Assist'
'Yellow Card'
'Red Card'
The string that I am ...
1
vote
2answers
37 views
Find all delimiters next to substring in string and replace in python
Sample string:
s = "<sec>John</sec> said hi to a woman (named <sec>Mary)</sec>"
I need to transform this to:
s = "<sec>John</sec> said hi to a woman (named ...
-1
votes
1answer
72 views
How to split a string into a list but not brackets?
Sorry about the title - I wasn't sure how to word it. Anyway, I'm writing a markup language compiler in python that compiles into HTML. Example:
-(a){href:"http://www.google.com"}["Click me!"]
...
-1
votes
2answers
25 views
regex expression not recognising the other lines
I have a regex which I would like to match a couple of things:
Here is a link to the examples and the code which I have started but for errors which I cannot determine in my regex is not recognising ...
0
votes
1answer
24 views
Convert re.match/re.search to string
I've been looking through having re.match/re.search find a certain int from my file. The int will differ, which is why I'm using regex in the first place. Here is the file:
Money:
*1,000 coins
*2 ...
2
votes
3answers
42 views
grouping using regex ending with colon ':'
I have a code which is used to group the words inside the paranthesis,if it has got a same name before paranthesis.
Eg:
car __name__(skoda,audi)
car __name__(benz)
Outputs:
car ...
0
votes
1answer
33 views
Name error with regular expression
I am trying to parse the a file content with regular expression as in the code below. If I print the system name inside 'IF' suite, it works. But If I try to do anywhere outside, its throwing name ...
1
vote
3answers
50 views
Python regex to add a character to all words in a string except and
I want to be able to generate 'foos, bars and bees' from 'foo, bar and bee' using re.sub.
I can't even get just adding 's' to all words to work. I'll work on excluding 'and' once I get that part. ...
1
vote
2answers
40 views
match pattern to its counterpart from a list of patterns
In Python, I want to have a pair like this:
patterns:
abc, def
ghi, jkl
mno, xyz
The idea is: given a string, I want to search for occurrence of any of the pattern p from patterns and when I find ...
-4
votes
1answer
49 views
Get two numbers in regex
I have the following string:
s='123223423424,1982379879343'
I need to get both numbers (without using a split()). Here is what I have so far:
re.match(r'\d{7,20}',s).group()
However, this only ...
0
votes
5answers
41 views
How to replace a text using the found expression with regex?
I have a .txt file that contains the following lines (hundreds like that) :
AAIT AC Asia Information Tech MSCI Ishares
AAL American Airlines Group Inc.
AAME Atlantic American Corp
AAOI ...
-2
votes
1answer
37 views
Python Regex to match time format works - why?
I'm writing a function that needs to match hour/minute/seconds in order to allow the user to provide a time argument on the command line in a more convenient fashion than just specifying the number of ...
2
votes
3answers
69 views
Correcting repeated letters in user messages
I try to analyze messages from social media or chats. A common issue is this special kind of misspelling where people use repeated characters to express their emotions or whatever e.g.
"wowwwwww!"
...
0
votes
2answers
39 views
python regex search findall capturing groups
I just want to get "66664324", the content between ")" and "-".
Why did the search method get the ")" and "-" themselves.
a="(021)66664324-01"
b1=re.findall('\)(.*)-',a)
>['66664324']
...
0
votes
1answer
12 views
Django url pattern order and regex
There is something I can't understand which is happening with my app.
This is what django documentation says.
Django runs through each URL pattern, in order, and stops at the first one that ...
0
votes
1answer
29 views
Python regular expression to print out sections of a string
Here is my code (apologies for the lengthiness of testString, I was not too sure how to format it):
testString = ...
0
votes
0answers
39 views
When to use regex and when to use full text search, and why
Background: I am still new to Python. What I have been learning when it comes to string searching has always centered around regex.
Use Case: An immense amount of text documents that need to be ...
1
vote
1answer
23 views
select a list of interfaces with Python CISCOCONFPARSE and regex
I use a double loop to select all interfaces GigabitEthernet1/0/1 to 1/0/16 and 2/0/1 to 2/0/16 using efficient tool CISCOCONFPARSE : here is the example, that works :
CONFIG_PARSED = ...
0
votes
1answer
20 views
Use of re.compile and groups in a regular expression in python
The input file, named consensus, is of the following form:
r Tor4ever AAcif1htILdru0BO0qX7OwGVhAU oHlbWBdaN3+QSleqBVL9/yAdcRs 2014-07-31 21:42:43
s Exit Fast Guard HSDir Running V2Dir Valid
v Tor ...
2
votes
1answer
49 views
Renaming Variables And Method Names In A Python Source File
I'm trying to write a Python program that will basically take as input a raw Python source file and change all variable names to V, and all method or function names to F and leave everything else as ...
-1
votes
2answers
42 views
Delete regex matching part of file
I have a file ,and i need to delete the regex matching part and write remaining lines to a file.
Regex matching Code to delete file:
import re
with open("in1.txt") as f:
lines = f.read()
m = ...
0
votes
3answers
32 views
Find a paragraph and find a string inside this paragraph with REGEX
I have inside an HTML page some lines like this :
<div>
<p class="match"> this sentence should match </p>
some text
<a class="a"> some text </a>
...
0
votes
5answers
51 views
parse using regex and print the line
I have a regex which is used to print the lines of file within a specified range.
Eg:
my _car_(10)
skoda
audi
my home
good
my _car_(11)
benz
outputs as:
(10)
skoda
audi
(11)
benz
EXPECTED:(I ...
0
votes
2answers
46 views
how to match `“` with regex in python?
There is a symbol in tweets : “
“@BrownieSWP: High is s***????” you like 12 tf
The symbol is not ". I write this regex to match it:
re.sub('(“|”)', '"', tweet)
This regex (“|”) worked in ...
1
vote
5answers
51 views
Parse CSV file with commas inside fields
I just received a file from a colleague and don't know how to parse this:
Input:
key,value1,"value2,hello"
Desired output:
key,value2
Perl or Python are the languages I understand.
Thanks, ...
-1
votes
2answers
21 views
Python regex group() works explanation
Could someone please explain why below each print gives different result? thanks.
import re
s = "-h5ello"
m = re.match("-\w(\d\w+)", s)
print ' m.group(): ',(m.group())
print ' m.group(0): ...
2
votes
2answers
26 views
re.split - Leave matched string in place?
If this is drop-dead simple or a duplicate, please let me know. I couldn't find an answer for this here already.
Python's re.split will hack up a string and return a list of strings split by the ...
