Python：TypeError：“builtin_function_or_method”类型的参数不可迭代
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Python: TypeError: argument of type 'builtin_function_or_method' is not iterable
提问by
I have the following code:
我有以下代码：
def search():
os.chdir("C:/Users/Luke/Desktop/MyFiles")
files = os.listdir(".")
os.mkdir("C:/Users/Luke/Desktop/FilesWithString")
string = input("Please enter the website your are looking for (in lower case):")
for x in files:
inputFile = open(x, "r")
try:
content = inputFile.read().lower
except UnicodeDecodeError:
continue
inputFile.close()
if string in content:
shutil.copy(x, "C:/Users/Luke/Desktop/FilesWithString")
which always gives this error:
这总是给出这个错误：
line 80, in search
if string in content:
TypeError: argument of type 'builtin_function_or_method' is not iterable
can someone shed some light on why.
有人可以解释一下原因吗？
thans
比
采纳答案by Abhijit
Change the line
换线
content = inputFile.read().lower
to
到
content = inputFile.read().lower()
Your original line assigns the built-in function lower to your variable content instead of calling the function str.lowerand assigning the return value which is definitely not iterable.
您的原始行将内置函数分配给您的变量内容，而不是调用该函数str.lower并分配绝对不可迭代的返回值。
回答by sotapme
You're using
你正在使用
content = inputFile.read().lower
instead of
代替
content = inputFile.read().lower()
ie you're getting the function lower and not the return value from lower.
即你得到的函数更低，而不是更低的返回值。
In effect what you're getting is:
实际上你得到的是：
>>>
>>> for x in "HELLO".lower:
... print x
...
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: 'builtin_function_or_method' object is not iterable
