Question

打开文件mbox-short.txt并逐行读取。当您找到以“From”开头的行时，如下所示：

From stephen.marquard@uct.ac.za Sat Jan  5 09:14:16 2008

您将使用split（）解析From行，并打印出行中的第二个单词（即发送消息的人的整个地址）。然后在最后打印出一个计数。

提示：请确保不要包含以“发件人：”开头的行。

mbox-short.txt文件的链接： http://www.pythonlearn.com/code/mbox-short.txt

fopen = raw_input('Enter the file name you want to open: ')
fname = open(fopen)
line = 0
count = 0
pieces = 0
email = list()
for line in fname:
    lines = line.rstrip()
    if not line.startswith('From '):
        continue
    pieces = line.split()
    print pieces[1]
print 'There were' ,count(pieces[1]), 'lines in the file with From as the first word

我设法得到正确的输出，直到最后一条打印消息。

执行：

Enter the file name you want to open: mbox-short.txt

louis@media.berkeley.edu
zqian@umich.edu
rjlowe@iupui.edu
zqian@umich.edu
rjlowe@iupui.edu
cwen@iupui.edu
cwen@iupui.edu
gsilver@umich.edu
gsilver@umich.edu
zqian@umich.edu
gsilver@umich.edu
wagnermr@iupui.edu
zqian@umich.edu
antranig@caret.cam.ac.uk
gopal.ramasammycook@gmail.com
david.horwitz@uct.ac.za
david.horwitz@uct.ac.za
david.horwitz@uct.ac.za
david.horwitz@uct.ac.za
stephen.marquard@uct.ac.za
louis@media.berkeley.edu
louis@media.berkeley.edu
ray@media.berkeley.edu
cwen@iupui.edu
cwen@iupui.edu
cwen@iupui.edu

Traceback (most recent call last):
print 'There were' ,count(pieces[1]), 'lines in the file with From as   the first word'

TypeError: 'int' object is not callable

我不知道为什么我会收到这个追溯。

Answer 1

'int' object is not callable因为count = 0然后是count(pieces[1])。你有一个整数，你正在调用它。在此之后：

pieces = line.split()
print pieces[1]

添加：

count += 1

然后改变这个：

print 'There were' ,count(pieces[1]),

对此：

print 'There were', count,

Answer 2

正如问题中的评论所提到的，count未列为功能 - 相反，它是int。你不能将pieces[1]传递给它，并期望它能够神奇地增加它自己。

如果您真的想要这样计数，只需在循环浏览文件时更新计数。

fopen = raw_input('Enter the file name you want to open: ')
fname = open(fopen)
line = 0 # unnecessary
count = 0 
pieces = 0 # also unnecessary
email = list() # also unnecessary
for line in fname:
    lines = line.rstrip()
    if not line.startswith('From '):
        continue
    pieces = line.split()
    print pieces[1]
    count = count + 1 # increment here - counts number of lines in file
print 'There were', count, 'lines in the file with From as the first word

Python错误：TypeError：'int'对象不可调用

2 个答案: