# ### two containers: the outer container is a type of data, or the elements inside a container type data
listvar = [1,2,3, (4,5,6) ] # secondary containment
# two lists
listvar = [l, 2,3, [4,5,6]]
Print (listvar)
# two tuple
TUP = (3,5, (7,8,9))
Print (TUP)
# set of two (only can be stored tuple)
setvar = {l, 2,3, (11,22,33)}
Print (setvar)
# two dictionaries
dictvar = { 'a': { 'c': 333}, 'b': 2 }
# remove 333
Print (dictvar [ 'A'] [ 'C'])
# four containers
container = [1,2,3, (4,5,6, { "a": 1, "b": [ 7,8,9]}), 90]
# removed. 9
RES = container [-2] [- 1] [ "B"] [- 1]
Print (RES)
# of equal length two containers
' ''
(1 ) which each element type data container
(2) the number of elements of each type of data container are identical
'' '
container = [(1,2,3),[4,5,6]]
# ### dictionary casts
'''
Required as long as the two containers, and each container inside the two elements can only be
' ''
# (1) is outside the list, which is a list or tuple or string
listvar = [[ "a" , 1], ( "b" , 2), "c123"] # string caution if the value is more, there are limitations
listvar = [[ "a", 1], ( "b", 2)] # recommended ***
RES = dict (listvar)
Print (RES)
# (2) is outside a tuple, which is a list of tuples or string
tuplevar = ([ "c", 11], ( "d", 23)) # recommended ***
RES = dict (tuplevar)
Print (RES)
# exception: If the list or tuple container to put the set, is not being given the grammar, but the situation unexpectedly, reach the desired effect
container = dict ([ { "a", 1}, { "b", 2}]) # deprecated
Print (Container)
# (. 3) are set out, there is a tuple or string
setvar = {( 'a', 1) , ( 'b', 2) , "c3"} # immutable data must be placed, to hash
RES = dict (setvar)
Print (RES)
"""
int() float() bool() complex()
str() list() tuple() set() dict()
When performing these functions strong turn, are converted into the current default data type
in this manner can also initialize a variable
"" "
RES = int ()
RES = List ()
Print (RES)