Datetime parsing does recognize am or pm

[vkosuri]

@coolrb The script assumes 24hr format by default, to work for you scenario you have to write like this

Scenario 1

from chatterbot import parsing
text= u'Your dental appointment with Dr P. Delvour is scheduled for October 29, 4:00pm. ABC Dentist, 555-555-555.'
dates_ch = parsing.datetime_parsing(text)
print(dates_ch)

Update regular expression

re_time = r'(?P<hour>\d{1,2})(\:(?P<minute>\d{1,2})\s?(?P<convention>am|pm))'

Scenario 2:

from chatterbot import parsing
text= u'Your dental appointment with Dr P. Delvour is scheduled for October 29, 16:00. ABC Dentist, 555-555-555.'
dates_ch = parsing.datetime_parsing(text)
print(dates_ch)

Scenario 3:
Skip minutes, the regex will work.

from chatterbot import parsing
text= u'Your dental appointment with Dr P. Delvour is scheduled for October 29, 4 pm. ABC Dentist, 555-555-555.'
dates_ch = parsing.datetime_parsing(text)
print(dates_ch)

Closes: #1277

[vkosuri]

@gunthercox any comments/suggestions?

[gunthercox]

The changes to the regular expression look good to me. I'd just recommend adding two test cases to the unit tests, one for am and one for pm.

[vkosuri]

Fixes #651

Master, will add tests also

from chatterbot import parsing

text = u'Your appointment in next 3 weeks'
dates_ch = parsing.datetime_parsing(text)
print(dates_ch)

text = u'Your appointment in next 4 days'
dates_ch = parsing.datetime_parsing(text)
print(dates_ch)

text = u'Your appointment in next 10 years'
dates_ch = parsing.datetime_parsing(text)
print(dates_ch)

[('next 3 weeks', datetime.datetime(2018, 5, 24, 0, 0), (20, 32))]
[('next 4 days', datetime.datetime(2018, 5, 7, 0, 0), (20, 31))]
[('next 10 year', datetime.datetime(2023, 11, 21, 0, 0), (20, 32))]

[vkosuri]

I was trying to add more test scenario next 12 months, next day which falls to next month etc.

[vkosuri]

I think this PR addresses this issue also #1291

[vkosuri]

@gunthercox any comments/suggestions?

[gunthercox]

@vkosuri This does appear to correct the issue. Very nice work!