1. Get the key of a minimum value from the following dictionary.¶

In [13]:
sample_dict = {
  'Physics': 82,
  'Math': 65,
  'history': 75
}


def find_min_key(sample_dict):
    min_num = ()
    for item in sample_dict.items():
        if not min_num:  # Checking empty tuple condition
            min_num = item

        if min_num[1] > item[1]:
            min_num = item
            
    return min_num

min_num = find_min_key(sample_dict)
print(min_num[0])    

Math

2. Write a Python program to check if value 200 exists in the following dictionary.¶

In [15]:
sample_dict = {'a': 100, 'b': 200, 'c': 300}

num_to_search = int(input('Enter a number to search in the dictionary'))

dict_values = sample_dict.values()

if num_to_search in dict_values:
    print(f"{num_to_search} present in a dict")
else:
    print(f"{num_to_search} NOT present in a dict")

500 NOT present in a dict

3. Merge two Python dictionaries into one¶

In [19]:
dict1 = {'Ten': 10, 'Twenty': 20, 'Thirty': 30}
dict2 = {'Thirty': 30, 'Fourty': 40, 'Fifty': 50}

dict1.update(dict2)
dict1
Out[19]:
{'Ten': 10, 'Twenty': 20, 'Thirty': 30, 'Fourty': 40, 'Fifty': 50}
In [ ]: