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String literals occurring elsewhere in Python code may also act as documentation. They are not recognized by the Python bytecode compiler and are not accessible as runtime object attributes (i.e. not assigned to __doc__ ), but two types of extra docstrings may be extracted by software tools:
Use a nice editor like SciTe, select your code, press Ctrl + Q and done. If you don't have an editor that supports block comments you can use a triple quoted string at the start and the end of your code block to 'effectively' comment it out. It is not the best practice though. edited Mar 19, 2014 at 19:05.
Ctrl+/ comments or uncomments the current line or several selected lines with single line comments ({# in Django templates, or # in Python scripts). Pressing Ctrl+Shift+/ for a selected block of source code in a Django template surrounds the block with {% comment %} and {% endcomment %} tags. n = 5. while n > 0:
Whitespace in Python is too important to allow any other kind of comment besides the # comment that goes to the end of the line. Take this code: x = 1. for i in range(10): x = x + 1. /* Print. */ print x. Because indentation determines scope, the parser has no good way of knowing the control flow.
1. All you need to do is select that code block with your mouse, then press the following key combination: Ctrl + K then press Ctrl + C if you’re using Windows. Command + K then press Command + C if you’re on a Mac. You can also use: Ctrl + / to comment and uncomment lines of Python code on Windows. Command + / to comment and uncomment ...
Actually if you break your statement into multiple lines you can. Something like: '-n', '100', '-f', '/dev/stdout'] should work. And to make matters even nicer. If you mark a region of text in Emacs and ask it to comment it out in Python mode, it will automatically break the line into multiple lines and comment out only the section you've marked.
2. When in doubt, look at the standard library for a model. Here's an excerpt from the timeit module (written by Guido van Rossum himself): def print_exc(self, file=None): """Helper to print a traceback from the timed code. Typical use: t = Timer(...) # outside the try/except. try:
I propose to make the Python source code encoding both visible and changeable on a per-source file basis by using a special comment at the top of the file to declare the encoding. To make Python aware of this encoding declaration a number of concept changes are necessary with respect to the handling of Python source code data.
Yes, it is also a comment. And the contents of that comment carry special meaning if located at the top of the file, in the first two lines. From the Encoding declarations documentation: If a comment in the first or second line of the Python script matches the regular expression coding[=:]\s*([-\w.]+), this comment is processed as an encoding ...
Technically, in Python, this is just a comment line. This line is only used if you run the py script from the shell (from the command line). This is know as the "Shebang!", and it is used in various situations, not just with Python scripts. Here, it instructs the shell to start a specific version of Python (to take care of the rest of the file.