Python-辞書からキーを削除する方法

辞書は、日中のプログラミング、Web開発、AI / MLプログラミングなどのさまざまな実用的なアプリケーションでも使用されており、全体として便利なコンテナになっています。したがって、辞書の使用に関連するさまざまなタスクを実行する方法を知っていることは常にプラスです。

例

# using del
# Initializing dictionary
test_dict = {"Vishesh" : 29, "Ram" : 21, "Vishal" : 27, "Prashant" : 25}
# Printing dictionary before removal
print ("The dictionary before performing remove is : " + str(test_dict))
# Using del to remove a dict
del test_dict['Vishal']
# Printing dictionary after removal
print ("The dictionary after remove is : " + str(test_dict))
# using pop()
# Initializing dictionary
test_dict = {"Vishesh" : 29, "Ram" : 21, "Vishal" : 27, "Prashant" : 25}  
# Printing dictionary before removal
print ("The dictionary before performing remove is : " + str(test_dict))
# Using pop() to remove a dict. pair
removed_value = test_dict.pop('Ram')
# Printing dictionary after removal
print ("The dictionary after remove is : " + str(test_dict))
print ("The removed key's value is : " + str(removed_value))  
# Using pop() to remove a dict. pair doesn't raise exception
# assigns 'No Key found' to removed_value
removed_value = test_dict.pop('Nilesh', 'No Key found')  
# Printing dictionary after removal
print ("The dictionary after remove is : " + str(test_dict))
print ("The removed key's value is : " + str(removed_value))
# using items() + dict comprehension  
# Initializing dictionary
test_dict = {"Vishesh" : 29, "Ram" : 21, "Vishal" : 27, "Prashant" : 25}  
# Printing dictionary before removal
print ("The dictionary before performing remove is : " + str(test_dict))  
# Using items() + dict comprehension to remove a dict. pair
new_dict = {key:val for key, val in test_dict.items() if key != 'Prashant}
# Printing dictionary after removal
print ("The dictionary after remove is : " + str(new_dict))
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