How does converted string into datetime works?

Question

Hello to all, i just wonder why i am getting an error for my converted string into datetime.

I have these fields:

current_year  = form['year_id'][1]

date_range = datetime.strptime(str(current_year)+'-01-01','%Y-%m-%d').date()

total_month_elapsed = (book_list.date_from.year - date_range.year) * 12 + book_list.date_from.month - date_range.month

I don't know when *date_range* is read the terminal says:

date_range = datetime.strptime(str(current_year)+'-01-01','%Y-%m-%d').date()
TypeError: mu

Atchuthan - Technical Consultant, Sodexis Inc · Accepted Answer

To find number of months, you could use *relativedelta* python package

/from dateutil.relativedelta import relativedelta
from datetime import date
d1 = date(2001, 5, 1)
d2 = date(2012, 1, 1)
rd = relativedelta(d2, d1)
print "{0.years} years and {0.months} months".format(rd)

*Output*: /10 years and 8 months

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