劉宜棣python輸入input尋找find沒找到-1

file = open('金融常識.txt','r',encoding='utf-8') lines = file.readlines() file.close() x = input('劉宜棣入搜尋關鍵詞: ') for line in lines: if line.find(x) != -1: print(line,end="") file = open('金融常識.txt','r',encoding='utf-8') lines = file.readlines() file.close() x = input('劉宜棣輸入搜尋關鍵詞: ') n = 0 for line in lines: if line.find(x) != -1: n=n+1 print(n,' ',line,end='') print(f'總共{n}題')

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劉宜棣python輸入input尋找find沒找到-1

file = open('金融常識.txt','r',encoding='utf-8') lines = file.readlines() file.close() x = input('劉宜棣入搜尋關鍵詞: ') for line in lines: if line.find(x) != -1: print(line,end="") file = open('金融常識.txt','r',encoding='utf-8') lines = file.readlines() file.close() x = input('劉宜棣輸入搜尋關鍵詞: ') n = 0 for line in lines: if line.find(x) != -1: n=n+1 print(n,' ',line,end='') print(f'總共{n}題') file = open('金融常識.txt','r',encoding='utf-8') lines = file.readlines() file.close() x = input('劉宜棣輸入搜尋關鍵詞: ') n = 0 for line in lines: if x in line: n=n+1 print( n, ' ', line,end='') print(f'總共{n}題') file = open('金融常識.txt','r',encoding='utf-8') reading = file.read() file.seek(0) #回到檔案的開始 lines = file.readlines() file.close() print('read()方法讀共', len(reading), 'readlines()方法讀共', len...
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劉宜棣python集合set字典dict統計字元數目37,241不同字元數1251

file = open('金融常識.txt','r',encoding='utf-8') reading = file.read() file.close() print('檔案字元characters數:', len(reading)) mySet = set(reading)#將串列轉成集合,稱她 mySet得到1251 myDict = dict() #定義字典dict稱他為 myDict例如改成DoraSet for j in mySet: myDict[j] = 0 for i in reading: myDict[i] += 1 for j in mySet: print(f"字元「{j}」出現{myDict[j]:,}次數") print(f'字元數目{len(reading):,}，不同字元數{len(mySet):,}') #python和其他所有語言不同的特徵 f string格式化字串文字 print(f"劉宜棣統計左引號(出現次數{myDict['(']:,}") print(f'劉宜棣統計右引號)出現次數{myDict[")"]:,}') print(f'劉宜棣統計504每題四個選項至少有{504*4:,}')
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