Answers for "list functions"

list methods python

list.append(x) # append x to end of list
list.extend(iterable) # append all elements of iterable to list
list.insert(i, x) # insert x at index i
list.remove(x) # remove first occurance of x from list
list.pop([i]) # pop element at index i (defaults to end of list)
list.clear() # delete all elements from the list
list.index(x[, start[, end]]) # return index of element x
list.count(x) # return number of occurances of x in list
list.reverse() # reverse elements of list in-place (no return)
list.sort(key=None, reverse=False) # sort list in-place
list.copy() # return a shallow copy of the list

list functions

list.append()
list.clear()
list.copy()	
list.count()
list.extend()
list.index()     
list.insert()	
list.pop()	
list.remove()	
list.reverse()	
list.append()	
list.clear()	
list.copy()	
list.count()	
list.extend()	
list.index()	
list.insert()	
list.pop()	
list.remove()	
list.reverse()	
list.sort()	
sorted(list)

list methods

my_list = ["banana", "cherry", "apple"]

# len() : get the number of elements in a list
print("Length:", len(my_list))

# append() : adds an element to the end of the list
my_list.append("orange")

# insert() : adds an element at the specified position
my_list.insert(1, "blueberry")
print(my_list)

# pop() : removes and returns the item at the given position, default is the last item
item = my_list.pop()
print("Popped item: ", item)

# remove() : removes an item from the list
my_list.remove("cherry") # Value error if not in the list
print(my_list)

# clear() : removes all items from the list
my_list.clear()
print(my_list)

# reverse() : reverse the items
my_list = ["banana", "cherry", "apple"]
my_list.reverse()
print('Reversed: ', my_list)

# sort() : sort items in ascending order
my_list.sort()
print('Sorted: ', my_list)

# use sorted() to get a new list, and leave the original unaffected.
# sorted() works on any iterable type, not just lists
my_list = ["banana", "cherry", "apple"]
new_list = sorted(my_list)

# create list with repeated elements
list_with_zeros = [0] * 5
print(list_with_zeros)

# concatenation
list_concat = list_with_zeros + my_list
print(list_concat)

# convert string to list
string_to_list = list('Hello')
print(string_to_list)

python list function

# empty list
print(list())

# vowel string
vowel_string = 'aeiou'
print(list(vowel_string))

# vowel tuple
vowel_tuple = ('a', 'e', 'i', 'o', 'u')
print(list(vowel_tuple))

# vowel list
vowel_list = ['a', 'e', 'i', 'o', 'u']
print(list(vowel_list))

Python list functions

>>> fruits = ['orange', 'apple', 'pear', 'banana', 'kiwi', 'apple', 'banana']
>>> fruits.count('apple')
2
>>> fruits.count('tangerine')
0
>>> fruits.index('banana')
3
>>> fruits.index('banana', 4)  # Find next banana starting a position 4
6
>>> fruits.reverse()
>>> fruits
['banana', 'apple', 'kiwi', 'banana', 'pear', 'apple', 'orange']
>>> fruits.append('grape')
>>> fruits
['banana', 'apple', 'kiwi', 'banana', 'pear', 'apple', 'orange', 'grape']
>>> fruits.sort()
>>> fruits
['apple', 'apple', 'banana', 'banana', 'grape', 'kiwi', 'orange', 'pear']
>>> fruits.pop()
'pear'

python functions list

def all(iterable):
    for element in iterable:
        if not element:
            return False
    return True