[learn Python from simple to deep] object oriented 3 module class and date time class

One 、 Modules are also classes

Modules are also classes , for example pandas modular , Installation mode pip install pandas

from pandas import Series
# Instantiation 
ser1=Series(data=[4,7,-5,3])
print(ser1.values)
print(ser1.sum())

[ 4 7 -5 3]
9

Two 、 Date time class datetime

from datetime import datetime
# Instantiation 
dt1=datetime(2022,1,1)
print(dt1)

2022-01-01 00:00:00

dt2=datetime(2022,1,1,12,30,5)
print(dt2)

2022-01-01 12:30:05

# Calling method 
print(dt2.day)# Check the day 
print(dt2.minute)# see 
print(dt2.date())

1
30
2022-01-01

strpttime

#strpttime
string_dt='2019-1-1'
print(type(string_dt))

<class ‘str’>

print(datetime.strptime(string_dt,'%Y-%m-%d'))

2019-01-01 00:00:00