Answers for "how to define an append list in python"

list methods append in python

l1 = [1, 8, 7, 2, 21, 15]
l1.append(45) # adds 45 at the end of the list.

#it will append number at the end of list which number you will write.

python list append

# Add to List
my_list * 2                # [1, 2, '3', True, 1, 2, '3', True]
my_list + [100]            # [1, 2, '3', True, 100] --> doesn't mutate original list, creates new one
my_list.append(100)        # None --> Mutates original list to [1, 2, '3', True, 100]          # Or: <list> += [<el>]
my_list.extend([100, 200]) # None --> Mutates original list to [1, 2, '3', True, 100, 200]
my_list.insert(2, '!!!')   # None -->  [1, 2, '!!!', '3', True] - Inserts item at index and moves the rest to the right.

' '.join(['Hello','There'])# 'Hello There' --> Joins elements using string as separator.

how to append list in python

list_1 = ['w','h']
list_1.append('y')        # you need no veribal to store list_1.append('y')
print(list_1)             # ['w','h','y']

list_2 = ['a','r','e']
list_1.append(list_2)     # This also donot need a veribal to store it
print(list_1)             # ['w','h','y',['a','r','e']]

list_1.extend(list_2)
print(list_1)             # ['w','h','y',['a','r','e'],'a','r','e']