How to match times with days using regular expressions in Python?












0















It's the first time for me to put a question here and I'm a beginner in Python. I'd match times (hours and minutes) with days from a text. I wrote this expression for that:



(([0-9]+.?[0-9]+(a|p)m)[(Mon|Tues|Wednes|Thurs|Fri|Satur|Sun)day]?)


However, it matches times only without days. Can you help me please what the wrong with that expression is?
Many thanks






regex python-3.x







share|improve this question




















  • 1





    For regexes it i prudent to post the text you are looking into as well. How would we test otherwise

    – Patrick Artner
    Nov 27 '18 at 19:03
















0















It's the first time for me to put a question here and I'm a beginner in Python. I'd match times (hours and minutes) with days from a text. I wrote this expression for that:



(([0-9]+.?[0-9]+(a|p)m)[(Mon|Tues|Wednes|Thurs|Fri|Satur|Sun)day]?)


However, it matches times only without days. Can you help me please what the wrong with that expression is?
Many thanks






regex python-3.x







share|improve this question




















  • 1





    For regexes it i prudent to post the text you are looking into as well. How would we test otherwise

    – Patrick Artner
    Nov 27 '18 at 19:03














0












0








0








It's the first time for me to put a question here and I'm a beginner in Python. I'd match times (hours and minutes) with days from a text. I wrote this expression for that:



(([0-9]+.?[0-9]+(a|p)m)[(Mon|Tues|Wednes|Thurs|Fri|Satur|Sun)day]?)


However, it matches times only without days. Can you help me please what the wrong with that expression is?
Many thanks






regex python-3.x







share|improve this question
















It's the first time for me to put a question here and I'm a beginner in Python. I'd match times (hours and minutes) with days from a text. I wrote this expression for that:



(([0-9]+.?[0-9]+(a|p)m)[(Mon|Tues|Wednes|Thurs|Fri|Satur|Sun)day]?)


However, it matches times only without days. Can you help me please what the wrong with that expression is?
Many thanks






regex python-3.x




regex python-3.x






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Nov 27 '18 at 19:22









Patrick Haugh

29.6k92749




29.6k92749










asked Nov 27 '18 at 18:52









Salim Al MandhariSalim Al Mandhari

32




32








  • 1





    For regexes it i prudent to post the text you are looking into as well. How would we test otherwise

    – Patrick Artner
    Nov 27 '18 at 19:03














  • 1





    For regexes it i prudent to post the text you are looking into as well. How would we test otherwise

    – Patrick Artner
    Nov 27 '18 at 19:03








1




1





For regexes it i prudent to post the text you are looking into as well. How would we test otherwise

– Patrick Artner
Nov 27 '18 at 19:03





For regexes it i prudent to post the text you are looking into as well. How would we test otherwise

– Patrick Artner
Nov 27 '18 at 19:03












1 Answer
1






active

oldest

votes


















2














The problem is within [(Mon|Tues|Wednes|Thurs|Fri|Satur|Sun)day]?, because as stated in www.regular-expressions.info:




Only parentheses can be used for grouping. Square brackets define a
character class, and curly braces are used by a quantifier with
specific limits.




So you need to change square brackets for parentheses:



((Mon|Tues|Wednes|Thurs|Fri|Satur|Sun)day)?


Your final regex should look like this:



(([0-9]+.?[0-9]+(a|p)m)((Mon|Tues|Wednes|Thurs|Fri|Satur|Sun)day)?)


I make some changes to improve it a little bit:



((d{1,2}:?d{1,2}(a|p)m)((Mon|Tues|Wednes|Thurs|Fri|Satur|Sun)day)?)


Where:





  • d its the same as [0-9].


  • {1,2} means that the preceding token should be present 1 or 2 times.


As a tip, you could use https://regex101.com to build your regular expressions and test them in place.






share|improve this answer
























  • Thank you for your answer. Itried it but it didn't work with my Mac. So, If I want to match time and day from this sentence: (Can you tell me the name of a movie which starts at 6.10pm on Thursday the 16th of August please?), it still matches time only without day.

    – Salim Al Mandhari
    Nov 27 '18 at 21:01













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1 Answer
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1 Answer
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2














The problem is within [(Mon|Tues|Wednes|Thurs|Fri|Satur|Sun)day]?, because as stated in www.regular-expressions.info:




Only parentheses can be used for grouping. Square brackets define a
character class, and curly braces are used by a quantifier with
specific limits.




So you need to change square brackets for parentheses:



((Mon|Tues|Wednes|Thurs|Fri|Satur|Sun)day)?


Your final regex should look like this:



(([0-9]+.?[0-9]+(a|p)m)((Mon|Tues|Wednes|Thurs|Fri|Satur|Sun)day)?)


I make some changes to improve it a little bit:



((d{1,2}:?d{1,2}(a|p)m)((Mon|Tues|Wednes|Thurs|Fri|Satur|Sun)day)?)


Where:





  • d its the same as [0-9].


  • {1,2} means that the preceding token should be present 1 or 2 times.


As a tip, you could use https://regex101.com to build your regular expressions and test them in place.






share|improve this answer
























  • Thank you for your answer. Itried it but it didn't work with my Mac. So, If I want to match time and day from this sentence: (Can you tell me the name of a movie which starts at 6.10pm on Thursday the 16th of August please?), it still matches time only without day.

    – Salim Al Mandhari
    Nov 27 '18 at 21:01


















2














The problem is within [(Mon|Tues|Wednes|Thurs|Fri|Satur|Sun)day]?, because as stated in www.regular-expressions.info:




Only parentheses can be used for grouping. Square brackets define a
character class, and curly braces are used by a quantifier with
specific limits.




So you need to change square brackets for parentheses:



((Mon|Tues|Wednes|Thurs|Fri|Satur|Sun)day)?


Your final regex should look like this:



(([0-9]+.?[0-9]+(a|p)m)((Mon|Tues|Wednes|Thurs|Fri|Satur|Sun)day)?)


I make some changes to improve it a little bit:



((d{1,2}:?d{1,2}(a|p)m)((Mon|Tues|Wednes|Thurs|Fri|Satur|Sun)day)?)


Where:





  • d its the same as [0-9].


  • {1,2} means that the preceding token should be present 1 or 2 times.


As a tip, you could use https://regex101.com to build your regular expressions and test them in place.






share|improve this answer
























  • Thank you for your answer. Itried it but it didn't work with my Mac. So, If I want to match time and day from this sentence: (Can you tell me the name of a movie which starts at 6.10pm on Thursday the 16th of August please?), it still matches time only without day.

    – Salim Al Mandhari
    Nov 27 '18 at 21:01
















2












2








2







The problem is within [(Mon|Tues|Wednes|Thurs|Fri|Satur|Sun)day]?, because as stated in www.regular-expressions.info:




Only parentheses can be used for grouping. Square brackets define a
character class, and curly braces are used by a quantifier with
specific limits.




So you need to change square brackets for parentheses:



((Mon|Tues|Wednes|Thurs|Fri|Satur|Sun)day)?


Your final regex should look like this:



(([0-9]+.?[0-9]+(a|p)m)((Mon|Tues|Wednes|Thurs|Fri|Satur|Sun)day)?)


I make some changes to improve it a little bit:



((d{1,2}:?d{1,2}(a|p)m)((Mon|Tues|Wednes|Thurs|Fri|Satur|Sun)day)?)


Where:





  • d its the same as [0-9].


  • {1,2} means that the preceding token should be present 1 or 2 times.


As a tip, you could use https://regex101.com to build your regular expressions and test them in place.






share|improve this answer













The problem is within [(Mon|Tues|Wednes|Thurs|Fri|Satur|Sun)day]?, because as stated in www.regular-expressions.info:




Only parentheses can be used for grouping. Square brackets define a
character class, and curly braces are used by a quantifier with
specific limits.




So you need to change square brackets for parentheses:



((Mon|Tues|Wednes|Thurs|Fri|Satur|Sun)day)?


Your final regex should look like this:



(([0-9]+.?[0-9]+(a|p)m)((Mon|Tues|Wednes|Thurs|Fri|Satur|Sun)day)?)


I make some changes to improve it a little bit:



((d{1,2}:?d{1,2}(a|p)m)((Mon|Tues|Wednes|Thurs|Fri|Satur|Sun)day)?)


Where:





  • d its the same as [0-9].


  • {1,2} means that the preceding token should be present 1 or 2 times.


As a tip, you could use https://regex101.com to build your regular expressions and test them in place.







share|improve this answer












share|improve this answer



share|improve this answer










answered Nov 27 '18 at 19:19









Giovanni BenussiGiovanni Benussi

7771719




7771719













  • Thank you for your answer. Itried it but it didn't work with my Mac. So, If I want to match time and day from this sentence: (Can you tell me the name of a movie which starts at 6.10pm on Thursday the 16th of August please?), it still matches time only without day.

    – Salim Al Mandhari
    Nov 27 '18 at 21:01





















  • Thank you for your answer. Itried it but it didn't work with my Mac. So, If I want to match time and day from this sentence: (Can you tell me the name of a movie which starts at 6.10pm on Thursday the 16th of August please?), it still matches time only without day.

    – Salim Al Mandhari
    Nov 27 '18 at 21:01



















Thank you for your answer. Itried it but it didn't work with my Mac. So, If I want to match time and day from this sentence: (Can you tell me the name of a movie which starts at 6.10pm on Thursday the 16th of August please?), it still matches time only without day.

– Salim Al Mandhari
Nov 27 '18 at 21:01







Thank you for your answer. Itried it but it didn't work with my Mac. So, If I want to match time and day from this sentence: (Can you tell me the name of a movie which starts at 6.10pm on Thursday the 16th of August please?), it still matches time only without day.

– Salim Al Mandhari
Nov 27 '18 at 21:01






















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