I'm writing an application that involves having users enter time's in the following format:
1m30s # 1 Minute, 30 Seconds
3m15s # 3 Minutes, 15 Seconds
2m25s # 2 Minutes, 25 Seconds
2m # 2 Minutes
55s # 55 Seconds
The data can have a single "minute designation", a single "second designation", or both. What is the proper way to parse these strings into a format similar to:
{
"minutes" : 3
"seconds" : 25
}
import re
tests=['1m30s','3m15s','2m25s','2m','55s']
for time_str in tests:
match=re.match('(?:(\d*)m)?(?:(\d*)s)?',time_str)
if match:
minutes = int(match.group(1) or 0)
seconds = int(match.group(2) or 0)
print({'minutes':minutes,
'seconds':seconds})
# {'seconds': 30, 'minutes': 1}
# {'seconds': 15, 'minutes': 3}
# {'seconds': 25, 'minutes': 2}
# {'seconds': 0, 'minutes': 2}
# {'seconds': 55, 'minutes': 0}
Regex to the rescue!
>>> import re
>>> minsec = re.compile(r'(?P<minutes>\d+)m(?P<seconds>\d+)s')
>>> result = minsec.match('1m30s')
>>> result.groupdict()
{'seconds': '30', 'minutes': '1'}
Edit: Here is a revised solution:
import re
pattern = r'(?:(?P<minutes>\d+)m)?(?:(?P<seconds>\d+)s)?'
minsec = re.compile(pattern)
def parse(s, pat=minsec):
return pat.match(s).groupdict()
tests = ['1m30s', '30s', '10m29s']
for t in tests:
print '---'
print ' in:', t
print 'out:', parse(t)
Outputs:
---
in: 1m30s
out: {'seconds': '30', 'minutes': '1'}
---
in: 30s
out: {'seconds': '30', 'minutes': None}
---
in: 10m29s
out: {'seconds': '29', 'minutes': '10'}
