Python說：AttributeError：'_io.TextIOWrapper'對象沒有屬性'

Question

我正在用Python編寫一個程序來計算文件中的頻繁字符。它計數的字符由用戶決定。我不斷收到這個消息，我一直在努力最長用無濟於事弄明白：

filename = open('all-Names.txt', 'r') 
character = input("Enter character: ") 
x = filename.count(character) 
print(x) 
filename.close() 

Answer 1

有一個文件對象上沒有count()方法。你應該遍歷文件行和總結計數每行：

character = input("Enter character: ") 

with open('all-Names.txt', 'r') as f: 
    print(sum(line.count(character) for line in f)) 

演示：

$ cat all-Names.txt 
test 
test2 
test3 
test4 
test5 
$ python 
... 
>>> character = input("Enter character: ") 
Enter character: t 
>>> with open('all-Names.txt', 'r') as f: 
... print(sum(line.count(character) for line in f)) 
... 
10