[python] Python Requests - No connection adapters

I'm using the Requests: HTTP for Humans library and I got this weird error and I don't know what is mean.

No connection adapters were found for '192.168.1.61:8080/api/call'

Anybody has an idea?

One more reason, maybe your url include some hiden characters, such as '\n'.

If you define your url like below, this exception will raise:

url = '''
http://google.com
'''

because there are '\n' hide in the string. The url in fact become:

\nhttp://google.com\n