16-List_nested.py

''' 
author : Jaydatt

Nested List and access or copy

'''

print("-------------- nested-0 -----------------")
# different data type in list.
nested1 = [1, 2, ['a', 'b', 'c'],['d', 'e'],['f', 'g', 'h']]
for x in nested1:
    print("level1: ")
    if type(x) is list:
        for y in x:
            print("     level2: {}".format(y))
    else:
        print(x)


print("-------------- nested-1 -----------------")

print([10, 20, 30][1])

nested1 = [['a', 'b', 'c'],['d', 'e'],['f', 'g', 'h']]
y = nested1[1]
print(y)
print(y[0])
print(nested1[1][0])


print("-------------- nested-2 -----------------")

info = {'personal_data':
         {'name': 'Lauren',
          'age': 20,
          'major': 'Information Science',
          'physical_features':
             {'color': {'eye': 'blue',
                        'hair': 'brown'},
              'height': "5'8"}
         },
       'other':
         {'favorite_colors': ['purple', 'green', 'blue'],
          'interested_in': ['social media', 'intellectual property', 'copyright', 'music', 'books']
         }
      }
color = info['personal_data']['physical_features']['color']
print(color)

print("-------------- nested-3 -----------------")
nested1 = [['a', 'b', 'c'],['d', 'e'],['f', 'g', 'h']]
for x in nested1:
    print("level1: ")
    for y in x:
        print("     level2: " + y)


print("-------------- nested-4 -----------------")
# Below, we have provided a list of lists that contain information about people. Write code to create a new list that contains every person’s last name, and save that list as last_names.
info = [['Tina', 'Turner', 1939, 'singer'], ['Matt', 'Damon', 1970, 'actor'], ['Kristen', 'Wiig', 1973, 'comedian'], ['Michael', 'Phelps', 1985, 'swimmer'], ['Barack', 'Obama', 1961, 'president']]

last_names = []
for i in info:
    last_names += [i[1]]
print("last name: ",last_names)

print("-------------- nested-5 -----------------")
# Below, we have provided a list of lists named L. Use nested iteration to save every string containing “b” into a new list named b_strings.
L = [['apples', 'bananas', 'oranges', 'blueberries', 'lemons'], ['carrots', 'peas', 'cucumbers', 'green beans'], ['root beer', 'smoothies', 'cranberry juice']]
b_strings = []
for lst in L:
    for word in lst:
        if 'b' in word:
            b_strings += [word]