사전은 일상 프로그래밍, 웹 개발 및 AI/ML 프로그래밍과 같은 다양한 실용적인 응용 프로그램에서도 사용되므로 전체적으로 유용한 컨테이너입니다. 따라서 사전 사용과 관련된 다양한 작업을 수행하는 방법을 아는 것은 항상 장점입니다.
예시
# 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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