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Python program to replace dictionary value for the given keys in another dictionary

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mahmoud2506
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2022-05-22
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A dictionary contains the pair of the keys & values (represents key : value), a dictionary is created by providing the elements within the curly braces ({}), separated by the commas. 

In a dictionary, the keys need to be unique but the values mapped can have duplicate values.

And using the keys, we can find and replace values mapped to it.

We have two dictionaries, one with values and another consisting of the key-value pairs. We need to print the dictionary after replacing values for keys present in replace dictionary.

Example:

Dictionary:
['scala':8, 'Javascript': 7, 'Python':1, 'C++':5, 'Java':3]

ReplaceDictionary:
['Javascript': 2, 'C++': 9]

UpdatedDictionary:
['scala':8, 'Javascript': 2, 'Python':1, 'C++':9, 'Java':3]
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mahmoud2506
2022-05-22
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Program to replace dictionary value for the given keys in another dictionary

# Python program to replace dictionary value 
# for the given keys in another dictionary

# Initialising dictionary
myDict = {'Scala': 2, 'Javascript': 1, 'Python': 8, 'C++': 1, 'Java': 4}
updateDict = {"Scala"  : 10, "Python" : 17}

print("Dictionary = ", end = " ")
print(myDict)

# Updating dictionary using update values
for sub in myDict:
    if sub in updateDict:
        myDict[sub]  = updateDict[sub]
  
# Printing the dictionary
print("Updated dictionary = ", end = " ")
print(myDict)

Output:

Dictionary =  {'C++': 1, 'Javascript': 1, 'Python': 8, 'Scala': 2, 'Java': 4}
Updated dictionary =  {'C++': 1, 'Javascript': 1, 'Python': 17, 'Scala': 10, 'Java': 4}

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