How to match times with days using regular expressions in Python?
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
edited Nov 27 '18 at 19:22
Patrick Haugh
29.6k92749
asked Nov 27 '18 at 18:52
Salim Al MandhariSalim Al Mandhari
32
add a comment |
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
edited Nov 27 '18 at 19:22
Patrick Haugh
29.6k92749
asked Nov 27 '18 at 18:52
Salim Al MandhariSalim Al Mandhari
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
add a comment |
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
edited Nov 27 '18 at 19:22
Patrick Haugh
29.6k92749
asked Nov 27 '18 at 18:52
Salim Al MandhariSalim Al Mandhari
32
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
edited Nov 27 '18 at 19:22
Patrick Haugh
29.6k92749
asked Nov 27 '18 at 18:52
Salim Al MandhariSalim Al Mandhari
32
edited Nov 27 '18 at 19:22
Patrick Haugh
29.6k92749
asked Nov 27 '18 at 18:52
Salim Al MandhariSalim Al Mandhari
32
edited Nov 27 '18 at 19:22
Patrick Haugh
29.6k92749
edited Nov 27 '18 at 19:22
Patrick Haugh
29.6k92749
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
asked Nov 27 '18 at 18:52
Salim Al MandhariSalim Al Mandhari
32
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
add a comment |
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
add a comment |
1 Answer
1
active
oldest
votes
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:
dits 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.
answered Nov 27 '18 at 19:19
Giovanni BenussiGiovanni Benussi
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
add a comment |
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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:
dits 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.
answered Nov 27 '18 at 19:19
Giovanni BenussiGiovanni Benussi
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
add a comment |
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:
dits 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.
answered Nov 27 '18 at 19:19
Giovanni BenussiGiovanni Benussi
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
add a comment |
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:
dits 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.
answered Nov 27 '18 at 19:19
Giovanni BenussiGiovanni Benussi
7771719
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:
dits 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.
answered Nov 27 '18 at 19:19
Giovanni BenussiGiovanni Benussi
7771719
answered Nov 27 '18 at 19:19
Giovanni BenussiGiovanni Benussi
7771719
answered Nov 27 '18 at 19:19
Giovanni BenussiGiovanni Benussi
7771719
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
add a comment |
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
add a comment |
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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