Python错误：TypeError：'int'对象不可调用

Question

打开文件mbox-short.txt并逐行读取它。当你发现开头“从”类似下面的一行：

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

您将采用分体式（）解析从线和线打印出的第二个字（即人的全部地址谁发了消息）。然后在最后打印一个计数。

提示：确保不要包含以'From：'开头的行。

链接，MBOX-short.txt文件： 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，直到最后的打印信息。

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 

我不知道为什么我收到这个回溯。

Answer 1

正如有关评论也提到，count未列为a功能 - 相反，它是一个int。你不能通过pieces[1]它，并期望它魔术增加自己。

如果您确实需要这种计数，只需在循环遍历文件时更新计数即可。

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 

Answer 2

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

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

补充一点：

count += 1 

，然后改变这一点：

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

要这样：

print 'There were', count,