I see two answers with good qualities, each with a small flaw, so I will give my take on it: Try os.path.exists, and consider os.makedirs...
When to use reshape and when resize?. Both reshape and resize change the shape of the numpy array; the difference is that using resize will...
nltk tweettokenizer, Natural Language Toolkit
The line of code that throws Could not run curl-config: [Errno 2] No such file or directory” when installing pycurl on Linux, should inform the user as to remedy - a pre-requisite, rather than leaving them to test their google skills.
You can add system variable by (by doing this you can use easy_install without specifying path) 1 Clicking on Properties of My Computer 2 Then chose Advanced...