# 14Jan2026
# Class 4
'''
l=[1,2,3,4,5]
print(len(l),l[0],l[-5])
print(l[-1],l[4])
print(x)
print(x, type(x))
l=[1,2,3,4,5]
x = slice(2,4,1) #slice(starting, ending-1, + no of steps)
print(l[x])
l=[1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19]
x=slice(2,18,7)
print(l[x])
l=[1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,34,78,66,101,23,88] #25
x=slice(11,22,5) # 25 - 22 ==> 12,17,66
print(len(l), l[x])
print(l[::])
print(l[::2])
print(l[::4])
print(l[:12])
print(l[5:12])
l.append(99)
print(l)
l.insert(2,1000) # position#, value
print(l)
del l[:10:2]
print(l)
l.remove(13)
print(l)
y=l.pop(0)
print(y,l)
print(id(l))
#l=[]
l.clear()
print(id(l),l)
'''
l=[1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,34,78,66,101,23,88]
l2=[77,88,99]
l2=l2+l
#print(l2)
l3=l2.copy()
print(l3, id(l3))
l4=list(l3)
print(l4, id(l4))
l5=l4[::]
print(l5)
print(l[::-1]) #flip the list, print from right to left
l.reverse()
print(l)
l2=l[::-1]
print(l2)
l=[1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,34,78,66,101,23,88,13] #25
x=slice(11,22,5) # 25 - 22 ==> 12,17,66
l2=l[::-1]
print(l2)
print(l)
l.reverse
print(l)
l=[1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,34,78,66,101,23,88,13] #25
l.sort()
print(l)
l=[1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,34,78,66,101,23,88,13] #25
l2=sorted(l) #must remember sort and sorted
print(l)
print(l2)
l=[1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,34,78,66,101,23,88,13] #25
print(l.index(11))
print(l.count(13))
#tuple
l=1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,34,78,66,101,23,88,13 #no need bracket for tuple but most people use ( )
print(type(l), l)
#l[0]=2
l=1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,34,78,66,101,23,88,13 #no need bracket for tuple but most people use ( )
l2=1,2,3
print(id(l2))
l2=l2+l
print(id(l2),l2)
l1=1,3,2,4,5
l2=99,88,77
l3=list(l1)
l3.sort()
l3=tuple(l3) #since tuple cannot be amended, it can not be sorted
print(l3)
l4=sorted(l2)
l4=tuple(l4)
print(l4)
l6=1, # if tuple only 1 element, need a comma
l7=() # for empty tuple needs a comma
print(type(l6), type(l7))
x,y=1,2 #both x,y and 1,2 are tuple destructure the tuple this is what we need to know in python
x=x+1
print(x,y)
print(type(x), type(y))
'''
(x,y)=(1,2,3)
print(type(x),type(y))
(x,y)=(1,)
print(type(x),type(y))
(x,y)=(1,),
print(type(x),type(y))
(x,y)=(1,),1
print(type(x),type(y))
'''
x,y=1,1
x, y=x,x
print(x,y)
x,y=1,10
x, y=x,x
print(x,y)
x,y=1,10
x, y = y,x
print(x,y)
x=1
y=10
temp=x
x=y
y=temp
# in the older daus we use this to swap, but actually use tuple is shorter way to so it, and it is specialities of python
#dictionary
'''
Person
Name="MARK"
AGE=18
GENDER="MALE"
Person =
{
"Name":"MARK",
"AGE":18,
"GENDER":"MALE"
}
'''
person={"name":"Mark","age":18,"gender":"female"}
print(person, type(person))
print(person["name"])
name="name"
person={name:"Mark","age":18,"gender":"female"}
print(person, type(person))
print(person[name])
name="name"
name_value="Mark"
person={name:name_value,"age":18,"gender":"female"}
print(person, type(person))
print(person[name])
