python将数字添加到字符串[重复]

尝试将 count int 添加到字符串末尾（网址）:

Code:

  count = 0
  while count < 20:
    Url = "http://www.ihiphopmusic.com/music/page/" 
    Url = (Url) + (count)
    #Url = Url.append(count)
    print Url

I want:

http://www.ihiphopmusic.com/music/page/2
http://www.ihiphopmusic.com/music/page/3
http://www.ihiphopmusic.com/music/page/4
http://www.ihiphopmusic.com/music/page/5

Results:

Traceback (most recent call last):
  File "grub.py", line 7, in <module>
    Url = Url + (count)
TypeError: cannot concatenate 'str' and 'int' objects

问题正是回溯所指出的。 Python 不知道该怎么办"hello" + 12345

您必须转换整数count首先成字符串。

此外，你永远不会增加count变量，所以你的 while 循环将永远持续下去。

尝试这样的事情：

count = 0
url = "http://example.com/"
while count < 20:
    print(url + str(count))
    count += 1

或者甚至更好：

url = "http://example.com/"
for count in range(1, 21):
    print(url + str(count))

正如 Just_another_dunce 指出的，在 Python 2.x 中，你还可以这样做

print url + str(count)