[Python] Memo dictionary

Python dictionary (dict) for loop processing (keys, values, items)

To loop the elements of the Python dictionary object dict with a for statement, use the methods keys (), values (), items () of the dictionary object dict.

test = {'key1': 1, 'key2': 2, 'key3': 3}

** keys (): for loop processing for each element key **

for A in test.keys():

# key1
# key2
# key3

** values (): for loop processing for each element value **

for B in test.values():

# 1
# 2
# 3

** items (): for loop processing for key and value of each element **

for C, D in test.items():
    print(C, D)

# key1 1
# key2 2
# key3 3

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