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Python Lists

list definition a sequence of objects. The objects can be of any type: numbers, strings, even other lists.
list format pets = [‘goldfish’, ‘cat’, ‘dog’]
True if object x is in list lst, false otherwise x in lst
False if object x is in list lst, true otherwise x not in lst
Concatenation of lists lstA and lstB lstA + lstB
Concatenation of n copies of list lst lst * n, n * lst
Item at index i of list lst lst[i]
Length of list lst len(lst)
Smallest item in list lst min(lst)
Largest item in list lst max(lst)
Sum of items in list lst sum(lst)
Can you change a list? YES. Lists are mutable.
To get more info on lists help(list)
Adds item to the end of list lst st.append(item)
Returns the number of occurrences of item in list lst lst.count(item)
Returns the index of the first occurrence of item in list lst lst.index(item)
Inserts item into list just before index index lst.insert(index, item)
Removes last item in the list lst.pop()
Removes first occurrence of item in the list lst.remove(item)
Reverses the order of items in the list lst.reverse()
Sorts the list lst.sort()
slice list A slice of a list is a list. When the indexing operator is applied to a list with two arguments, it will return a list. when the indexing operator is applied to a list with only one argument, the item of the list given spot is returned.
Created by: kbaldwin
Popular Computers sets




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