Row level transformations using map¶

Let us understand how we can perform row level transformations using map. Here are some of the examples.

Derive new fields from existing fields.
Get last 4 digits of social security number.
Standardize phone numbers.
Convert names to lower or upper case.
Break down the address into street, city, state, zip code.
Encrypt confidential information such as social security number or other unique ids such as Aadhaar.

%run 02_preparing_data_sets.ipynb

orders[:10]

['1,2013-07-25 00:00:00.0,11599,CLOSED',
 '2,2013-07-25 00:00:00.0,256,PENDING_PAYMENT',
 '3,2013-07-25 00:00:00.0,12111,COMPLETE',
 '4,2013-07-25 00:00:00.0,8827,CLOSED',
 '5,2013-07-25 00:00:00.0,11318,COMPLETE',
 '6,2013-07-25 00:00:00.0,7130,COMPLETE',
 '7,2013-07-25 00:00:00.0,4530,COMPLETE',
 '8,2013-07-25 00:00:00.0,2911,PROCESSING',
 '9,2013-07-25 00:00:00.0,5657,PENDING_PAYMENT',
 '10,2013-07-25 00:00:00.0,5648,PENDING_PAYMENT']

len(orders)

order_items[:10]

['1,1,957,1,299.98,299.98',
 '2,2,1073,1,199.99,199.99',
 '3,2,502,5,250.0,50.0',
 '4,2,403,1,129.99,129.99',
 '5,4,897,2,49.98,24.99',
 '6,4,365,5,299.95,59.99',
 '7,4,502,3,150.0,50.0',
 '8,4,1014,4,199.92,49.98',
 '9,5,957,1,299.98,299.98',
 '10,5,365,5,299.95,59.99']

len(order_items)

Task 1¶

Get day name of each date in our orders data set. Output should be tuple with 3 elements.

order_id of type integer
order_date of type string
order_day_name of type string

import datetime as dt
d = dt.datetime.strptime('2013-07-25 00:00:00.0'.split(' ')[0], '%Y-%m-%d')

datetime.datetime(2013, 7, 25, 0, 0)

d.weekday()

import calendar

list(calendar.day_name)

['Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday', 'Sunday']

calendar.day_name[d.weekday()]

'Thursday'

import datetime as dt, calendar as c

order = '1,2013-07-25 00:00:00.0,11599,CLOSED'

order.split(',')[1].split(' ')[0]

'2013-07-25'

dt.datetime.strptime(order.split(',')[1].split(' ')[0], '%Y-%m-%d')

datetime.datetime(2013, 7, 25, 0, 0)

dt.datetime.strptime(order.split(',')[1].split(' ')[0], '%Y-%m-%d').weekday()

c.day_name[dt.datetime.strptime(order.split(',')[1].split(' ')[0], '%Y-%m-%d').weekday()]

'Thursday'

import datetime as dt, calendar as c
order_dates = map(
    lambda order: c.day_name[dt.datetime.strptime(order.split(',')[1].split(' ')[0], '%Y-%m-%d').weekday()],
    orders
)

list(order_dates)[:10]

['Thursday',
 'Thursday',
 'Thursday',
 'Thursday',
 'Thursday',
 'Thursday',
 'Thursday',
 'Thursday',
 'Thursday',
 'Thursday']

Note

We can use lambda function as long as we do not have assignment operations. However, we might end up compromising readability.

import datetime as dt, calendar as c
order_dates = map(
    lambda order: (
        int(order.split(',')[0]),
        order.split(',')[1],
        c.day_name[dt.datetime.strptime(order.split(',')[1].split(' ')[0], '%Y-%m-%d').weekday()]
    ),
    orders
)

list(order_dates)[:10]

[(1, '2013-07-25 00:00:00.0', 'Thursday'),
 (2, '2013-07-25 00:00:00.0', 'Thursday'),
 (3, '2013-07-25 00:00:00.0', 'Thursday'),
 (4, '2013-07-25 00:00:00.0', 'Thursday'),
 (5, '2013-07-25 00:00:00.0', 'Thursday'),
 (6, '2013-07-25 00:00:00.0', 'Thursday'),
 (7, '2013-07-25 00:00:00.0', 'Thursday'),
 (8, '2013-07-25 00:00:00.0', 'Thursday'),
 (9, '2013-07-25 00:00:00.0', 'Thursday'),
 (10, '2013-07-25 00:00:00.0', 'Thursday')]

Note

Here is the example of implementation using named function.

def get_order_date(order):
    order_details = order.split(',')
    order_id = int(order_details[0])
    order_date = order.split(',')[1]
    order_date_as_datetime = dt.datetime.strptime(order_date.split(' ')[0], '%Y-%m-%d')
    order_day_name = c.day_name[order_date_as_datetime.weekday()]
    return (order_id, order_date, order_day_name)

order_dates = map(
    get_order_date,
    orders
)

list(order_dates)[:10]

[(1, '2013-07-25 00:00:00.0', 'Thursday'),
 (2, '2013-07-25 00:00:00.0', 'Thursday'),
 (3, '2013-07-25 00:00:00.0', 'Thursday'),
 (4, '2013-07-25 00:00:00.0', 'Thursday'),
 (5, '2013-07-25 00:00:00.0', 'Thursday'),
 (6, '2013-07-25 00:00:00.0', 'Thursday'),
 (7, '2013-07-25 00:00:00.0', 'Thursday'),
 (8, '2013-07-25 00:00:00.0', 'Thursday'),
 (9, '2013-07-25 00:00:00.0', 'Thursday'),
 (10, '2013-07-25 00:00:00.0', 'Thursday')]

order_dates = map(
    lambda order: get_order_date(order),
    orders
)

list(order_dates)[:10]

[(1, '2013-07-25 00:00:00.0', 'Thursday'),
 (2, '2013-07-25 00:00:00.0', 'Thursday'),
 (3, '2013-07-25 00:00:00.0', 'Thursday'),
 (4, '2013-07-25 00:00:00.0', 'Thursday'),
 (5, '2013-07-25 00:00:00.0', 'Thursday'),
 (6, '2013-07-25 00:00:00.0', 'Thursday'),
 (7, '2013-07-25 00:00:00.0', 'Thursday'),
 (8, '2013-07-25 00:00:00.0', 'Thursday'),
 (9, '2013-07-25 00:00:00.0', 'Thursday'),
 (10, '2013-07-25 00:00:00.0', 'Thursday')]

Task 2¶

Add weekend flag for Saturday and Sunday dates.

def get_order_date(order):
    order_details = order.split(',')
    order_id = int(order_details[0])
    order_date = order.split(',')[1]
    order_date_as_datetime = dt.datetime.strptime(order_date.split(' ')[0], '%Y-%m-%d')
    order_day_name = c.day_name[order_date_as_datetime.weekday()]
    weekend_flag = True if order_date_as_datetime.weekday() in (5, 6) else False
    return (order_id, order_date, order_day_name, weekend_flag)

order_dates = map(
    get_order_date,
    orders
)

list(order_dates)[:10]

[(1, '2013-07-25 00:00:00.0', 'Thursday', False),
 (2, '2013-07-25 00:00:00.0', 'Thursday', False),
 (3, '2013-07-25 00:00:00.0', 'Thursday', False),
 (4, '2013-07-25 00:00:00.0', 'Thursday', False),
 (5, '2013-07-25 00:00:00.0', 'Thursday', False),
 (6, '2013-07-25 00:00:00.0', 'Thursday', False),
 (7, '2013-07-25 00:00:00.0', 'Thursday', False),
 (8, '2013-07-25 00:00:00.0', 'Thursday', False),
 (9, '2013-07-25 00:00:00.0', 'Thursday', False),
 (10, '2013-07-25 00:00:00.0', 'Thursday', False)]

Note

Validate whether weekend_flag is generated properly or not.

def get_order_date(order):
    order_details = order.split(',')
    order_id = int(order_details[0])
    order_date = order.split(',')[1]
    order_date_as_datetime = dt.datetime.strptime(order_date.split(' ')[0], '%Y-%m-%d')
    order_day_name = c.day_name[order_date_as_datetime.weekday()]
    weekend_flag = True if order_date_as_datetime.weekday() in (5, 6) else False
    return (order_id, order_date, order_day_name, weekend_flag)

order_dates = map(
    get_order_date,
    orders
)

order_dates_without_ids = map(
    lambda order: (order[1], order[2], order[3]),
    order_dates
)

set(order_dates_without_ids)

{('2013-07-25 00:00:00.0', 'Thursday', False),
 ('2013-07-26 00:00:00.0', 'Friday', False),
 ('2013-07-27 00:00:00.0', 'Saturday', True),
 ('2013-07-28 00:00:00.0', 'Sunday', True),
 ('2013-07-29 00:00:00.0', 'Monday', False),
 ('2013-07-30 00:00:00.0', 'Tuesday', False),
 ('2013-07-31 00:00:00.0', 'Wednesday', False),
 ('2013-08-01 00:00:00.0', 'Thursday', False),
 ('2013-08-02 00:00:00.0', 'Friday', False),
 ('2013-08-03 00:00:00.0', 'Saturday', True),
 ('2013-08-04 00:00:00.0', 'Sunday', True),
 ('2013-08-05 00:00:00.0', 'Monday', False),
 ('2013-08-06 00:00:00.0', 'Tuesday', False),
 ('2013-08-07 00:00:00.0', 'Wednesday', False),
 ('2013-08-08 00:00:00.0', 'Thursday', False),
 ('2013-08-09 00:00:00.0', 'Friday', False),
 ('2013-08-10 00:00:00.0', 'Saturday', True),
 ('2013-08-11 00:00:00.0', 'Sunday', True),
 ('2013-08-12 00:00:00.0', 'Monday', False),
 ('2013-08-13 00:00:00.0', 'Tuesday', False),
 ('2013-08-14 00:00:00.0', 'Wednesday', False),
 ('2013-08-15 00:00:00.0', 'Thursday', False),
 ('2013-08-16 00:00:00.0', 'Friday', False),
 ('2013-08-17 00:00:00.0', 'Saturday', True),
 ('2013-08-18 00:00:00.0', 'Sunday', True),
 ('2013-08-19 00:00:00.0', 'Monday', False),
 ('2013-08-20 00:00:00.0', 'Tuesday', False),
 ('2013-08-21 00:00:00.0', 'Wednesday', False),
 ('2013-08-22 00:00:00.0', 'Thursday', False),
 ('2013-08-23 00:00:00.0', 'Friday', False),
 ('2013-08-24 00:00:00.0', 'Saturday', True),
 ('2013-08-25 00:00:00.0', 'Sunday', True),
 ('2013-08-26 00:00:00.0', 'Monday', False),
 ('2013-08-27 00:00:00.0', 'Tuesday', False),
 ('2013-08-28 00:00:00.0', 'Wednesday', False),
 ('2013-08-29 00:00:00.0', 'Thursday', False),
 ('2013-08-30 00:00:00.0', 'Friday', False),
 ('2013-08-31 00:00:00.0', 'Saturday', True),
 ('2013-09-01 00:00:00.0', 'Sunday', True),
 ('2013-09-02 00:00:00.0', 'Monday', False),
 ('2013-09-03 00:00:00.0', 'Tuesday', False),
 ('2013-09-04 00:00:00.0', 'Wednesday', False),
 ('2013-09-05 00:00:00.0', 'Thursday', False),
 ('2013-09-06 00:00:00.0', 'Friday', False),
 ('2013-09-07 00:00:00.0', 'Saturday', True),
 ('2013-09-08 00:00:00.0', 'Sunday', True),
 ('2013-09-09 00:00:00.0', 'Monday', False),
 ('2013-09-10 00:00:00.0', 'Tuesday', False),
 ('2013-09-11 00:00:00.0', 'Wednesday', False),
 ('2013-09-12 00:00:00.0', 'Thursday', False),
 ('2013-09-13 00:00:00.0', 'Friday', False),
 ('2013-09-14 00:00:00.0', 'Saturday', True),
 ('2013-09-15 00:00:00.0', 'Sunday', True),
 ('2013-09-16 00:00:00.0', 'Monday', False),
 ('2013-09-17 00:00:00.0', 'Tuesday', False),
 ('2013-09-18 00:00:00.0', 'Wednesday', False),
 ('2013-09-19 00:00:00.0', 'Thursday', False),
 ('2013-09-20 00:00:00.0', 'Friday', False),
 ('2013-09-21 00:00:00.0', 'Saturday', True),
 ('2013-09-22 00:00:00.0', 'Sunday', True),
 ('2013-09-23 00:00:00.0', 'Monday', False),
 ('2013-09-24 00:00:00.0', 'Tuesday', False),
 ('2013-09-25 00:00:00.0', 'Wednesday', False),
 ('2013-09-26 00:00:00.0', 'Thursday', False),
 ('2013-09-27 00:00:00.0', 'Friday', False),
 ('2013-09-28 00:00:00.0', 'Saturday', True),
 ('2013-09-29 00:00:00.0', 'Sunday', True),
 ('2013-09-30 00:00:00.0', 'Monday', False),
 ('2013-10-01 00:00:00.0', 'Tuesday', False),
 ('2013-10-02 00:00:00.0', 'Wednesday', False),
 ('2013-10-03 00:00:00.0', 'Thursday', False),
 ('2013-10-04 00:00:00.0', 'Friday', False),
 ('2013-10-05 00:00:00.0', 'Saturday', True),
 ('2013-10-06 00:00:00.0', 'Sunday', True),
 ('2013-10-07 00:00:00.0', 'Monday', False),
 ('2013-10-08 00:00:00.0', 'Tuesday', False),
 ('2013-10-09 00:00:00.0', 'Wednesday', False),
 ('2013-10-10 00:00:00.0', 'Thursday', False),
 ('2013-10-11 00:00:00.0', 'Friday', False),
 ('2013-10-12 00:00:00.0', 'Saturday', True),
 ('2013-10-13 00:00:00.0', 'Sunday', True),
 ('2013-10-14 00:00:00.0', 'Monday', False),
 ('2013-10-15 00:00:00.0', 'Tuesday', False),
 ('2013-10-16 00:00:00.0', 'Wednesday', False),
 ('2013-10-17 00:00:00.0', 'Thursday', False),
 ('2013-10-18 00:00:00.0', 'Friday', False),
 ('2013-10-19 00:00:00.0', 'Saturday', True),
 ('2013-10-20 00:00:00.0', 'Sunday', True),
 ('2013-10-21 00:00:00.0', 'Monday', False),
 ('2013-10-22 00:00:00.0', 'Tuesday', False),
 ('2013-10-23 00:00:00.0', 'Wednesday', False),
 ('2013-10-24 00:00:00.0', 'Thursday', False),
 ('2013-10-25 00:00:00.0', 'Friday', False),
 ('2013-10-26 00:00:00.0', 'Saturday', True),
 ('2013-10-27 00:00:00.0', 'Sunday', True),
 ('2013-10-28 00:00:00.0', 'Monday', False),
 ('2013-10-29 00:00:00.0', 'Tuesday', False),
 ('2013-10-30 00:00:00.0', 'Wednesday', False),
 ('2013-10-31 00:00:00.0', 'Thursday', False),
 ('2013-11-01 00:00:00.0', 'Friday', False),
 ('2013-11-02 00:00:00.0', 'Saturday', True),
 ('2013-11-03 00:00:00.0', 'Sunday', True),
 ('2013-11-04 00:00:00.0', 'Monday', False),
 ('2013-11-05 00:00:00.0', 'Tuesday', False),
 ('2013-11-06 00:00:00.0', 'Wednesday', False),
 ('2013-11-07 00:00:00.0', 'Thursday', False),
 ('2013-11-08 00:00:00.0', 'Friday', False),
 ('2013-11-09 00:00:00.0', 'Saturday', True),
 ('2013-11-10 00:00:00.0', 'Sunday', True),
 ('2013-11-11 00:00:00.0', 'Monday', False),
 ('2013-11-12 00:00:00.0', 'Tuesday', False),
 ('2013-11-13 00:00:00.0', 'Wednesday', False),
 ('2013-11-14 00:00:00.0', 'Thursday', False),
 ('2013-11-15 00:00:00.0', 'Friday', False),
 ('2013-11-16 00:00:00.0', 'Saturday', True),
 ('2013-11-17 00:00:00.0', 'Sunday', True),
 ('2013-11-18 00:00:00.0', 'Monday', False),
 ('2013-11-19 00:00:00.0', 'Tuesday', False),
 ('2013-11-20 00:00:00.0', 'Wednesday', False),
 ('2013-11-21 00:00:00.0', 'Thursday', False),
 ('2013-11-22 00:00:00.0', 'Friday', False),
 ('2013-11-23 00:00:00.0', 'Saturday', True),
 ('2013-11-24 00:00:00.0', 'Sunday', True),
 ('2013-11-25 00:00:00.0', 'Monday', False),
 ('2013-11-26 00:00:00.0', 'Tuesday', False),
 ('2013-11-27 00:00:00.0', 'Wednesday', False),
 ('2013-11-28 00:00:00.0', 'Thursday', False),
 ('2013-11-29 00:00:00.0', 'Friday', False),
 ('2013-11-30 00:00:00.0', 'Saturday', True),
 ('2013-12-01 00:00:00.0', 'Sunday', True),
 ('2013-12-02 00:00:00.0', 'Monday', False),
 ('2013-12-03 00:00:00.0', 'Tuesday', False),
 ('2013-12-04 00:00:00.0', 'Wednesday', False),
 ('2013-12-05 00:00:00.0', 'Thursday', False),
 ('2013-12-06 00:00:00.0', 'Friday', False),
 ('2013-12-07 00:00:00.0', 'Saturday', True),
 ('2013-12-08 00:00:00.0', 'Sunday', True),
 ('2013-12-09 00:00:00.0', 'Monday', False),
 ('2013-12-10 00:00:00.0', 'Tuesday', False),
 ('2013-12-11 00:00:00.0', 'Wednesday', False),
 ('2013-12-12 00:00:00.0', 'Thursday', False),
 ('2013-12-13 00:00:00.0', 'Friday', False),
 ('2013-12-14 00:00:00.0', 'Saturday', True),
 ('2013-12-15 00:00:00.0', 'Sunday', True),
 ('2013-12-16 00:00:00.0', 'Monday', False),
 ('2013-12-17 00:00:00.0', 'Tuesday', False),
 ('2013-12-18 00:00:00.0', 'Wednesday', False),
 ('2013-12-19 00:00:00.0', 'Thursday', False),
 ('2013-12-20 00:00:00.0', 'Friday', False),
 ('2013-12-21 00:00:00.0', 'Saturday', True),
 ('2013-12-22 00:00:00.0', 'Sunday', True),
 ('2013-12-23 00:00:00.0', 'Monday', False),
 ('2013-12-24 00:00:00.0', 'Tuesday', False),
 ('2013-12-25 00:00:00.0', 'Wednesday', False),
 ('2013-12-26 00:00:00.0', 'Thursday', False),
 ('2013-12-27 00:00:00.0', 'Friday', False),
 ('2013-12-28 00:00:00.0', 'Saturday', True),
 ('2013-12-29 00:00:00.0', 'Sunday', True),
 ('2013-12-30 00:00:00.0', 'Monday', False),
 ('2013-12-31 00:00:00.0', 'Tuesday', False),
 ('2014-01-01 00:00:00.0', 'Wednesday', False),
 ('2014-01-02 00:00:00.0', 'Thursday', False),
 ('2014-01-03 00:00:00.0', 'Friday', False),
 ('2014-01-04 00:00:00.0', 'Saturday', True),
 ('2014-01-05 00:00:00.0', 'Sunday', True),
 ('2014-01-06 00:00:00.0', 'Monday', False),
 ('2014-01-07 00:00:00.0', 'Tuesday', False),
 ('2014-01-08 00:00:00.0', 'Wednesday', False),
 ('2014-01-09 00:00:00.0', 'Thursday', False),
 ('2014-01-10 00:00:00.0', 'Friday', False),
 ('2014-01-11 00:00:00.0', 'Saturday', True),
 ('2014-01-12 00:00:00.0', 'Sunday', True),
 ('2014-01-13 00:00:00.0', 'Monday', False),
 ('2014-01-14 00:00:00.0', 'Tuesday', False),
 ('2014-01-15 00:00:00.0', 'Wednesday', False),
 ('2014-01-16 00:00:00.0', 'Thursday', False),
 ('2014-01-17 00:00:00.0', 'Friday', False),
 ('2014-01-18 00:00:00.0', 'Saturday', True),
 ('2014-01-19 00:00:00.0', 'Sunday', True),
 ('2014-01-20 00:00:00.0', 'Monday', False),
 ('2014-01-21 00:00:00.0', 'Tuesday', False),
 ('2014-01-22 00:00:00.0', 'Wednesday', False),
 ('2014-01-23 00:00:00.0', 'Thursday', False),
 ('2014-01-24 00:00:00.0', 'Friday', False),
 ('2014-01-25 00:00:00.0', 'Saturday', True),
 ('2014-01-26 00:00:00.0', 'Sunday', True),
 ('2014-01-27 00:00:00.0', 'Monday', False),
 ('2014-01-28 00:00:00.0', 'Tuesday', False),
 ('2014-01-29 00:00:00.0', 'Wednesday', False),
 ('2014-01-30 00:00:00.0', 'Thursday', False),
 ('2014-01-31 00:00:00.0', 'Friday', False),
 ('2014-02-01 00:00:00.0', 'Saturday', True),
 ('2014-02-02 00:00:00.0', 'Sunday', True),
 ('2014-02-03 00:00:00.0', 'Monday', False),
 ('2014-02-04 00:00:00.0', 'Tuesday', False),
 ('2014-02-05 00:00:00.0', 'Wednesday', False),
 ('2014-02-06 00:00:00.0', 'Thursday', False),
 ('2014-02-07 00:00:00.0', 'Friday', False),
 ('2014-02-08 00:00:00.0', 'Saturday', True),
 ('2014-02-09 00:00:00.0', 'Sunday', True),
 ('2014-02-10 00:00:00.0', 'Monday', False),
 ('2014-02-11 00:00:00.0', 'Tuesday', False),
 ('2014-02-12 00:00:00.0', 'Wednesday', False),
 ('2014-02-13 00:00:00.0', 'Thursday', False),
 ('2014-02-14 00:00:00.0', 'Friday', False),
 ('2014-02-15 00:00:00.0', 'Saturday', True),
 ('2014-02-16 00:00:00.0', 'Sunday', True),
 ('2014-02-17 00:00:00.0', 'Monday', False),
 ('2014-02-18 00:00:00.0', 'Tuesday', False),
 ('2014-02-19 00:00:00.0', 'Wednesday', False),
 ('2014-02-20 00:00:00.0', 'Thursday', False),
 ('2014-02-21 00:00:00.0', 'Friday', False),
 ('2014-02-22 00:00:00.0', 'Saturday', True),
 ('2014-02-23 00:00:00.0', 'Sunday', True),
 ('2014-02-24 00:00:00.0', 'Monday', False),
 ('2014-02-25 00:00:00.0', 'Tuesday', False),
 ('2014-02-26 00:00:00.0', 'Wednesday', False),
 ('2014-02-27 00:00:00.0', 'Thursday', False),
 ('2014-02-28 00:00:00.0', 'Friday', False),
 ('2014-03-01 00:00:00.0', 'Saturday', True),
 ('2014-03-02 00:00:00.0', 'Sunday', True),
 ('2014-03-03 00:00:00.0', 'Monday', False),
 ('2014-03-04 00:00:00.0', 'Tuesday', False),
 ('2014-03-05 00:00:00.0', 'Wednesday', False),
 ('2014-03-06 00:00:00.0', 'Thursday', False),
 ('2014-03-07 00:00:00.0', 'Friday', False),
 ('2014-03-08 00:00:00.0', 'Saturday', True),
 ('2014-03-10 00:00:00.0', 'Monday', False),
 ('2014-03-11 00:00:00.0', 'Tuesday', False),
 ('2014-03-12 00:00:00.0', 'Wednesday', False),
 ('2014-03-13 00:00:00.0', 'Thursday', False),
 ('2014-03-14 00:00:00.0', 'Friday', False),
 ('2014-03-15 00:00:00.0', 'Saturday', True),
 ('2014-03-16 00:00:00.0', 'Sunday', True),
 ('2014-03-17 00:00:00.0', 'Monday', False),
 ('2014-03-18 00:00:00.0', 'Tuesday', False),
 ('2014-03-19 00:00:00.0', 'Wednesday', False),
 ('2014-03-20 00:00:00.0', 'Thursday', False),
 ('2014-03-21 00:00:00.0', 'Friday', False),
 ('2014-03-22 00:00:00.0', 'Saturday', True),
 ('2014-03-23 00:00:00.0', 'Sunday', True),
 ('2014-03-24 00:00:00.0', 'Monday', False),
 ('2014-03-25 00:00:00.0', 'Tuesday', False),
 ('2014-03-26 00:00:00.0', 'Wednesday', False),
 ('2014-03-27 00:00:00.0', 'Thursday', False),
 ('2014-03-28 00:00:00.0', 'Friday', False),
 ('2014-03-29 00:00:00.0', 'Saturday', True),
 ('2014-03-30 00:00:00.0', 'Sunday', True),
 ('2014-03-31 00:00:00.0', 'Monday', False),
 ('2014-04-01 00:00:00.0', 'Tuesday', False),
 ('2014-04-02 00:00:00.0', 'Wednesday', False),
 ('2014-04-03 00:00:00.0', 'Thursday', False),
 ('2014-04-04 00:00:00.0', 'Friday', False),
 ('2014-04-05 00:00:00.0', 'Saturday', True),
 ('2014-04-06 00:00:00.0', 'Sunday', True),
 ('2014-04-07 00:00:00.0', 'Monday', False),
 ('2014-04-08 00:00:00.0', 'Tuesday', False),
 ('2014-04-09 00:00:00.0', 'Wednesday', False),
 ('2014-04-10 00:00:00.0', 'Thursday', False),
 ('2014-04-11 00:00:00.0', 'Friday', False),
 ('2014-04-12 00:00:00.0', 'Saturday', True),
 ('2014-04-13 00:00:00.0', 'Sunday', True),
 ('2014-04-14 00:00:00.0', 'Monday', False),
 ('2014-04-15 00:00:00.0', 'Tuesday', False),
 ('2014-04-16 00:00:00.0', 'Wednesday', False),
 ('2014-04-17 00:00:00.0', 'Thursday', False),
 ('2014-04-18 00:00:00.0', 'Friday', False),
 ('2014-04-19 00:00:00.0', 'Saturday', True),
 ('2014-04-20 00:00:00.0', 'Sunday', True),
 ('2014-04-21 00:00:00.0', 'Monday', False),
 ('2014-04-22 00:00:00.0', 'Tuesday', False),
 ('2014-04-23 00:00:00.0', 'Wednesday', False),
 ('2014-04-24 00:00:00.0', 'Thursday', False),
 ('2014-04-25 00:00:00.0', 'Friday', False),
 ('2014-04-26 00:00:00.0', 'Saturday', True),
 ('2014-04-27 00:00:00.0', 'Sunday', True),
 ('2014-04-28 00:00:00.0', 'Monday', False),
 ('2014-04-29 00:00:00.0', 'Tuesday', False),
 ('2014-04-30 00:00:00.0', 'Wednesday', False),
 ('2014-05-01 00:00:00.0', 'Thursday', False),
 ('2014-05-02 00:00:00.0', 'Friday', False),
 ('2014-05-03 00:00:00.0', 'Saturday', True),
 ('2014-05-04 00:00:00.0', 'Sunday', True),
 ('2014-05-05 00:00:00.0', 'Monday', False),
 ('2014-05-06 00:00:00.0', 'Tuesday', False),
 ('2014-05-07 00:00:00.0', 'Wednesday', False),
 ('2014-05-08 00:00:00.0', 'Thursday', False),
 ('2014-05-09 00:00:00.0', 'Friday', False),
 ('2014-05-10 00:00:00.0', 'Saturday', True),
 ('2014-05-11 00:00:00.0', 'Sunday', True),
 ('2014-05-12 00:00:00.0', 'Monday', False),
 ('2014-05-13 00:00:00.0', 'Tuesday', False),
 ('2014-05-14 00:00:00.0', 'Wednesday', False),
 ('2014-05-15 00:00:00.0', 'Thursday', False),
 ('2014-05-16 00:00:00.0', 'Friday', False),
 ('2014-05-17 00:00:00.0', 'Saturday', True),
 ('2014-05-18 00:00:00.0', 'Sunday', True),
 ('2014-05-19 00:00:00.0', 'Monday', False),
 ('2014-05-20 00:00:00.0', 'Tuesday', False),
 ('2014-05-21 00:00:00.0', 'Wednesday', False),
 ('2014-05-22 00:00:00.0', 'Thursday', False),
 ('2014-05-23 00:00:00.0', 'Friday', False),
 ('2014-05-24 00:00:00.0', 'Saturday', True),
 ('2014-05-25 00:00:00.0', 'Sunday', True),
 ('2014-05-26 00:00:00.0', 'Monday', False),
 ('2014-05-27 00:00:00.0', 'Tuesday', False),
 ('2014-05-28 00:00:00.0', 'Wednesday', False),
 ('2014-05-29 00:00:00.0', 'Thursday', False),
 ('2014-05-30 00:00:00.0', 'Friday', False),
 ('2014-05-31 00:00:00.0', 'Saturday', True),
 ('2014-06-01 00:00:00.0', 'Sunday', True),
 ('2014-06-02 00:00:00.0', 'Monday', False),
 ('2014-06-03 00:00:00.0', 'Tuesday', False),
 ('2014-06-04 00:00:00.0', 'Wednesday', False),
 ('2014-06-05 00:00:00.0', 'Thursday', False),
 ('2014-06-06 00:00:00.0', 'Friday', False),
 ('2014-06-07 00:00:00.0', 'Saturday', True),
 ('2014-06-08 00:00:00.0', 'Sunday', True),
 ('2014-06-09 00:00:00.0', 'Monday', False),
 ('2014-06-10 00:00:00.0', 'Tuesday', False),
 ('2014-06-11 00:00:00.0', 'Wednesday', False),
 ('2014-06-12 00:00:00.0', 'Thursday', False),
 ('2014-06-13 00:00:00.0', 'Friday', False),
 ('2014-06-14 00:00:00.0', 'Saturday', True),
 ('2014-06-15 00:00:00.0', 'Sunday', True),
 ('2014-06-16 00:00:00.0', 'Monday', False),
 ('2014-06-17 00:00:00.0', 'Tuesday', False),
 ('2014-06-18 00:00:00.0', 'Wednesday', False),
 ('2014-06-19 00:00:00.0', 'Thursday', False),
 ('2014-06-20 00:00:00.0', 'Friday', False),
 ('2014-06-21 00:00:00.0', 'Saturday', True),
 ('2014-06-22 00:00:00.0', 'Sunday', True),
 ('2014-06-23 00:00:00.0', 'Monday', False),
 ('2014-06-24 00:00:00.0', 'Tuesday', False),
 ('2014-06-25 00:00:00.0', 'Wednesday', False),
 ('2014-06-26 00:00:00.0', 'Thursday', False),
 ('2014-06-27 00:00:00.0', 'Friday', False),
 ('2014-06-28 00:00:00.0', 'Saturday', True),
 ('2014-06-29 00:00:00.0', 'Sunday', True),
 ('2014-06-30 00:00:00.0', 'Monday', False),
 ('2014-07-01 00:00:00.0', 'Tuesday', False),
 ('2014-07-02 00:00:00.0', 'Wednesday', False),
 ('2014-07-03 00:00:00.0', 'Thursday', False),
 ('2014-07-04 00:00:00.0', 'Friday', False),
 ('2014-07-05 00:00:00.0', 'Saturday', True),
 ('2014-07-06 00:00:00.0', 'Sunday', True),
 ('2014-07-07 00:00:00.0', 'Monday', False),
 ('2014-07-08 00:00:00.0', 'Tuesday', False),
 ('2014-07-09 00:00:00.0', 'Wednesday', False),
 ('2014-07-10 00:00:00.0', 'Thursday', False),
 ('2014-07-11 00:00:00.0', 'Friday', False),
 ('2014-07-12 00:00:00.0', 'Saturday', True),
 ('2014-07-13 00:00:00.0', 'Sunday', True),
 ('2014-07-14 00:00:00.0', 'Monday', False),
 ('2014-07-15 00:00:00.0', 'Tuesday', False),
 ('2014-07-16 00:00:00.0', 'Wednesday', False),
 ('2014-07-17 00:00:00.0', 'Thursday', False),
 ('2014-07-18 00:00:00.0', 'Friday', False),
 ('2014-07-19 00:00:00.0', 'Saturday', True),
 ('2014-07-20 00:00:00.0', 'Sunday', True),
 ('2014-07-21 00:00:00.0', 'Monday', False),
 ('2014-07-22 00:00:00.0', 'Tuesday', False),
 ('2014-07-23 00:00:00.0', 'Wednesday', False),
 ('2014-07-24 00:00:00.0', 'Thursday', False)}

Mastering Python

Row level transformations using map¶

Task 1¶

Task 2¶