Persian_to_Gregorian.py

import datetime
import jdatetime
from pandas import to_datetime

#def p_to_g(d, splitter='/'):
#    '''
#    Persian date instance to Gregorian date instance converstion assuming input date format to be format="%Y/%m/%d"
#    and provide output in same format.
#    '''
#    d = d.split(splitter)
#
#    return to_datetime(jdatetime.date(int(d[0]), int(d[1]),int(d[2])).togregorian(),\#utc=True, 
#                       format="%Y/%m/%d")

def p_to_g(d, splitter='/', date_out_format="%Y/%m/%d"):
#     # d = jdatetime.datetime.now(d).strftime("%Y/%m/%d").split('/')
     d = d.split(splitter)
#     # pd.to_datetime(jdatetime.date(int(d[0]), int(d[1]),int(d[2])).togregorian(),format="%Y/%m/%d")
#     # jdatetime.date(int(d[0]), int(d[1]),int(d[2])).togregorian()
     return jdatetime.date(int(d[0]), int(d[1]),int(d[2])).togregorian().strftime(date_out_format)
############
sample_date = '1330/12/09'

gdate = p_to_g(sample_date)
Out[1]: Timestamp('1952-02-29 00:00:00+0000')
    
gdate.date()
Out[2]: datetime.date(1952, 2, 29)

p_to_g(sample_date, splitter='/',date_out_format = '%y-%M-%d')
Out[3]: '52-00-29'

sample_date1 = '1330-12-09'
p_to_g(sample_date1,splitter='-')
Out[4]: '1952/02/29'
     
############   very clean functions
def p_to_g(d, splitter='/', date_out_format="%Y/%m/%d"):
    ''' p_to_g('1401/06/31') '2022/09/22'''
    import jdatetime #from jdatetime.date import fromgregorian, togregorian
    d = d.split(splitter) 
    return jdatetime.date(int(d[0]), int(d[1]),int(d[2])).\
        togregorian().strftime(date_out_format)
        
def g_to_p(d, splitter='/', date_out_format="%Y/%m/%d"):
    ''' g_to_p('1900/01/01')  '1278/10/11' '''
    import jdatetime
    d = d.split(splitter) 
    return jdatetime.date.fromgregorian(day=int(d[2]),
                                        month=int(d[1]),
                                        year=int(d[0])).\
        strftime(date_out_format)     
     
############
# apply to dataframe columns

df['gdate'] = df.apply(lambda x: p_to_g(x['pdate']), axis=1)
############
# p_to_g to be added