Q-1.Write a Python program to map two lists into a dictionary.
Input: keys = ['red', 'green', 'blue']
values = ['#FF0000','#008000', '#0000FF']
Output:{'red': '#FF0000', 'green': '#008000', 'blue': '#0000FF'}
Python Code:
#map two list into dictionary keys = ['red', 'green', 'blue'] values = ['#FF0000','#008000', '#0000FF'] color_code=dict(zip(keys,values)) print(color_code)
Q-2.Write a Python program to check whether a given key already exists in a dictionary.
Input: d = {1: 10, 2: 20, 3: 30, 4: 40, 5: 50, 6: 60}
Output: Key is present in the dictionary
Key is not present in the dictionary
Python Code:
#key exists or not in dictionary
d = {1: 10, 2: 20, 3: 30, 4: 40, 5: 50, 6: 60}
def is_key_present(x):
if x in d:
print('Key is present in the dictionary')
else:
print('Key is not present in the dictionary')
is_key_present(5)
is_key_present(9)
Q-3.Write a Python program to match key values in two dictionaries.
Input: x = {'key_1': 1, 'key_2': 3, 'key_3': 2}
y = {'key_1': 1, 'key_2': 2}
Output:key_1: 1 is present in both x and y
Python Code:
#match key values in two dictionaries.
x = {'key_1': 1, 'key_2': 3, 'key_3': 2}
y = {'key_1': 1, 'key_2': 2}
for (key, value) in set(x.items()) & set(y.items()):
print('%s: %s is present in both x and y' % (key, value))
Q-4.Write a Python program to get the key, value and item in a dictionary
Input: dict_num = {1: 10, 2: 20, 3: 30, 4: 40, 5: 50, 6: 60}
Output: key value count
1 10 1
2 20 2
3 30 3
4 40 4
5 50 5
6 60 6
Python Code:
#To get the key, value and item in a dictionary
dict_num = {1: 10, 2: 20, 3: 30, 4: 40, 5: 50, 6: 60}
print("key value count")
for count, (key, value) in enumerate(dict_num.items(), 1):
print(key,' ',value,' ', count)
Q-5.Write a Python program to concatenate following dictionaries to create a new one.
Input: dic1={1:10, 2:20}
dic2={3:30, 4:40}
dic3={5:50,6:60}
Output:{1: 10, 2: 20, 3: 30, 4: 40, 5: 50, 6: 60}
Python Code:
#concatenate the dictionaries
dic1={1:10, 2:20}
dic2={3:30, 4:40}
dic3={5:50,6:60}
dic4 = {}
for d in (dic1, dic2, dic3):
dic4.update(d)
print(dic4)
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