What minimum should a person know before saying "I know Python"

[rusi]

On Friday, September 20, 2013 3:28:00 PM UTC+5:30, Aseem Bansal wrote:
> I started Python 4 months ago. Largely self-study with use of Python documentation, stackoverflow and google. I was thinking what is the minimum that I must know before I can say that I know Python?
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> I come from a C background which is comparatively smaller. But as Python is comparatively much larger what minimum should I know?
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> Just a general question not for a specific purpose.

Stroustrup says he is still learning C++ and I know kids who have no qualms saying they know programming language L (for various values of L) after hardly an hour or two of mostly advertising and pep-talk exposure.
So without knowing what you mean my 'knowing' I am not going to try answering q-1

I am just curious about q-2 -- C is small compared to python -- whats your measure for that?

BTW 20 years ago I wrote about why C is very hard to learn and teach
In these intervening years some things have changed, some have not

See
http://blog.languager.org/2013/02/c-in-education-and-software-engineering.html#relevate