Answer to Question #282354 in Python for Evans Mulenga

Question

Provide your own examples of the following using Python lists. Create your own examples. Do not copy them from another source.

Nested lists

The “*” operator

List slices

The “+=” operator

A list filter

A list operation that is legal but does the "wrong" thing, not what the programmer expects

Provide the Python code and output for your program and all your examples

Answer 1

# Nested list
nested_list = [1,2,3,4,[5,6],7]


# operator
my_list = ['cat','dog','parrot']*3


# List slices
my_slice = my_list[2:4]


# += operator
my_list += ['rat', 'giraffe']


# List filter
boolean = [True, False, False, True]
list(filter(None,boolean))


# A list operation that is legal but does the "wrong" thing, not what the programmer expects
a = [2, 3, 5, 7, 11, 13]

a = a.append(17) 
# suppose to add number 17 to the end of list, so a = [2, 3, 5, 7, 11, 13, 17]

print(a) 
#instead, the result is a = None