List.py

spam = ['ciao', 'a', 'b']
spam[-2] #element a

spam[1:3] #element 1 e 2

spam[1:] #tutti gli element a parte lo 0
spam[:1} #solo l'elemento 0

del spam[1]

len(spam) #number of elements

[1,2,3] + [3,4] #[1, 2, 3, 3, 4}
[1, 2} * 3 #[3, 6]

list('Hello') #crea una lista H, e, l, l, o

'ciao' in spam   #evaluates to True or False wether or not 'ciao' is present in the container

##############################################

print(list(range(100)))     #list 0:99

spam = ['a', 'b', 'c']

#iterate through elements of a list
for i in range(len(spam)) :
 print('index ' + str(i) + ' value ' + spam[i])

#assignment for list
size, color, name = spam
size, color, name = 'skinny', 'black', 'quiet'

#swap environment variable values
a = 'aaa'
b = 'bbb'
a, b = b, a

##############################################

spam.index['a']

spam.append['b']
spam.insert(1, 'bla')

spam.remove('bla')
del spam[0]

spam.sort()
spam.sort(reverse=True)
spam.sort(key=str.lower)  #case insensitive sorting


#strings: similar to list
##when strings get assigned they get copied. This is not true for list!! When the
##list gets assigned we are only copying the reference!!
#This is true also when calling functions!! List (mutable data) as a parameter
#is taken by reference. String is instead copied

#To force the copy of a mutable object
import copy
copy.deepcopy(spam)