What I want to do is essentially reformat a string and make it pass the jsonschema validate function. Simple enough at face value. However, the tricky part is that the string is being read in from a file and can vary in it’s appearance and formatting. Example being OR Or any possible combination of sing…
Tag: regex
competing regular expressions (race condition)
I’m trying to use python PLY (lex/yacc) to parse a language called ‘GRBL’. GRBL looks something like this: The ‘G’ Codes tell a machine to ‘go’ (or move) and the coordinates say where. LEX requires us to specify a unique regular expression for every possible ‘to…
How to extract the value between the key using RegEx?
I have text like: I want to extract the characters as a list between a. For the above text, I am expecting output like: I have used: But it doesn’t work. Answer The ^ and $ will only match the beginning and end of a line, respectively. In this case, you will get the desired list by using the line:
Regex Pattern in Python for special charaters
I asked a similar question a few days ago on here and it was great help! A new challenge I wanted build is to further develop the regex pattern to look for specific formats in this iteration, and I thought I have solved it using regex 101 to build/test a regex code but when applied in Python received ‘p…
Python regex that matches superscripted text
My question is very simple but I couldn’t figure it out by myself: how to I match superscripted text with regex in Python? I’d like to match patterns like [a-zA-Z0-9,[]] but only if it’s superscripted. regards Answer The main problem is that information about “superscript” and &#…
Error while using str.contains for checking numeric values in a column using regex
I have a dataframe. I want to check if a particular column has numeric values or not using regex matching. When I use str.contains it shows an error like below. What is the correct way to check if all the values in a column have numeric values or not? Answer You can use With .astype(str), you will be able to
Replace character in file name with regex python
My script should replace the “|” character of a file it finds via regex in a directory with an “l”. The code runs but filenames are not replaced. What is wrong? Answer Joshua’s answer and the many comments, especially the suggestions from ekhumoro, already pointed out issues and …
Regular expression matching of the contents of text files in a directory
I have a directory of text files. I need to set a status for each file based on whether it matches 1, both or neither regex patterns. My plan is: Walk directory If the file’s content: does not match either pattern, status = 1 matches pattern1 BUT NOT pattern2, status = 2 matches pattern2 BUT NOT pattern…
Python: replace all characters in between two symbols that occur multiple times in a string
So I have a URL for a video file, and there is a simple hack I can do to get the audio file where I need to edit the string in a certain way. Here is the starting string: https://v.redd.it/jvjih3f894b61/DASH_1080.mp4?source=fallback I need replace the resolution DASH_1080 to DASH_audio and I figured I could j…
Python – to put space after period; not for a decimal number
Using Python and regex, would you please help converting to i.e., space needs to be inserted when it is between two alphabets and either one of the characters on either side is an alphabet. Space need NOT be inserted if both sides of the period is a digit. Please help. Thanks in advance. Answer You can use ne…