Python3 second

Posted 2020-08-13

#List append
list= [‘a‘,‘b‘,‘c‘,‘d‘,‘e‘,‘f‘,‘g‘]
print(list)

list.append(‘h‘)
print(list)

list2= [‘1‘,‘2‘,‘3‘,‘4‘,‘5‘,‘6‘,‘7‘,‘6‘]
list.extend(list2)
print(list)

list.insert(0,‘x‘)
print(list)

list.remove(‘x‘) #remove value
print(list)

list.pop(0)
print(list)

print(list.index(‘e‘))
print(list.count(‘6‘))
print(list.count(6))

list.reverse()
print(list)
list.pop()
print(list)
list.pop()
print(list)
list.pop()
print(list)


squares =[]
for x in range(10):
squares.append(x**2)
print(squares)


[print(x*2) for x in squares if x >0]


import time
time1="20071011"
time2="20071012"
t1 = time.strptime(time1, "%Y%m%d")
t2 = time.strptime(time2, "%Y%m%d")
print( t1 < t2)

import datetime
today = datetime.date.today()
print(today.strftime(‘%Y%m%d‘))

basket = {‘apple‘, ‘orange‘, ‘apple‘, ‘pear‘, ‘orange‘, ‘banana‘}
print(basket)

tel = {‘jack‘:4390,‘huang‘:1216}
print(tel)
print(tel[‘jack‘])