54 lines
1.7 KiB
Python
54 lines
1.7 KiB
Python
def main():
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from random import randint
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print('==Exercise 4==')
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LIST_A = [1,2.0,'c',{"id":4}]
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LIST_B = [randint(1,20) for i in range(10)]
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LIST_C = [*[chr(i+65) for i in range(10)],27,28.0]
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print('Lists Initial Values:')
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"""
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updated on Mar 23th 23:00
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课上写的有点问题，重写了
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print(f'{i["idtf"]}: {i["value"]}' for i in [
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{"idtf":"List A","value":LIST_A},
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{"idtf":"List B","value":LIST_B},
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{"idtf":"List C","value":LIST_C},
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])
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"""
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print(*[f'{i["idtf"]}: {i["value"]}' for i in [
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{"idtf":"List A","value":LIST_A},
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{"idtf":"List B","value":LIST_B},
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{"idtf":"List C","value":LIST_C},
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]],sep='\n')
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print('a range of items: ',LIST_C[:-3])
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print('reverse print of list: ',LIST_C[::-1])
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popped_item = LIST_C.pop(3)
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print(f'Deleted 4th item(index=3)={popped_item} from list C: {LIST_C}')
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LIST_C.insert(5,LIST_A)
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print(f'Insert items from list A to list C start from pos5(index=4): {LIST_A}')
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LIST_B.sort()
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print('sorting List B:',LIST_B)
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"""
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updated on Mar 23th 22:54
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课上写的有点问题，重写了
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print('number of similar items in the list B: ',sum([1 if LIST_B[i] in LIST_B[i+1:] else 0 for i in range(len(LIST_B))]))
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"""
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TEMP_DICT_SIMCOUNTER = {}
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for i in LIST_B:
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if i in TEMP_DICT_SIMCOUNTER: TEMP_DICT_SIMCOUNTER[i]+=1
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else: TEMP_DICT_SIMCOUNTER[i]=1
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print('number of similar items in the list B: ',*[f'{i}:{TEMP_DICT_SIMCOUNTER[i]} times ' if TEMP_DICT_SIMCOUNTER[i]>1 else "" for i in TEMP_DICT_SIMCOUNTER.keys()],sep='')
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print('==End Of Ex4==')
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return 0
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if __name__ == '__main__':
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main() |