Looks like your problem is that you are trying to run python test.py from within the Python interpreter, which is why you’re seeing that traceback. Make sure you’re out of the interpreter, then run the python test.py command from bash or command prompt or whatever.
How do you find the median of a list in Python? The list can be of any size and the numbers are not guaranteed to be in any particular order. If the list contains an even number of elements, the function should return the average of the middle two. Here are some examples (sorted for … Read more
In Mustache, {{.}} is a special tag referring to the value at the top of the context stack. If you’re looping through an array, it is the current element. If you’re rendering a section with an object as context, it refers to that object. So if your data looks like this: … and you’ve got a template like … Read more
ASCII defines 128 characters, which map to the numbers 0–127. Unicode defines (less than) 221 characters, which, similarly, map to numbers 0–221 (though not all numbers are currently assigned, and some are reserved). Unicode is a superset of ASCII, and the numbers 0–127 have the same meaning in ASCII as they have in Unicode. For example, the … Read more
The ‘\r’ character is the carriage return, and the carriage return-newline pair is both needed for newline in a network virtual terminal session. From the old telnet specification (RFC 854) (page 11): The sequence “CR LF”, as defined, will cause the NVT to be positioned at the left margin of the next print line (as would, for example, the … Read more
You can change the property categorie of the class Article like this: and the error should disappear. Eventually you might need another option for on_delete, check the documentation for more details: EDIT: As you stated in your comment, that you don’t have any special requirements for on_delete, you could use the option DO_NOTHING:
I saw this in someone’s code: where img_index is a running index and num_images is 3. When I mess around with // in IPython, it seems to act just like a division sign (i.e. one forward slash). I was just wondering if there is any reason for having double forward slashes?
Three years later, I think I know enough to answer my own question. 🙂 A computer program usually communicates with the kernel using predefined functions called system calls. Each OS has a different set of calls but often they do similar things like — allocating memory, reading and writing files, or handling processes. According to this … Read more
From Git Documentation: Incorporates changes from a remote repository into the current branch. In its default mode, git pull is shorthand for git fetch followed by git merge FETCH_HEAD As to your question about: WHY Why is Git creating a MERGE commit: That is the default behavior of git pull. There are lots of explanation of this behavior … Read more
Function ComponentsThese can be written as normal functions that take a props argument and return a JSX element. What about React.FC/React.FunctionComponent? You can also write components with React.FunctionComponent (or the shorthand React.FC): Some differences from the “normal function” version: It provides typechecking and autocomplete for static properties like displayName, propTypes, and defaultProps – However, there are currently known issues using defaultProps with React.FunctionComponent. See this issue for details … Read more