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adding directory to sys.path /PYTHONPATH
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This is working as documented. Any paths specified in PYTHONPATH are documented as normally coming after the working directory but before the standard interpreter-supplied paths. sys.path.append() appends to the existing path. See here and here. If you want a particular direc...
Why can't non-default arguments follow default arguments?
...is you", b="True"):
... print a,b,x,y
...
Reference O'Reilly - Core-Python
Where as this function make use of the default arguments syntactically correct for above function calls.
Keyword arguments calling prove useful for being a...
What is the difference between statically typed and dynamically typed languages?
... a statically-typed language with type inference).
Examples: Perl, Ruby, Python, PHP, JavaScript
Most scripting languages have this feature as there is no compiler to do static type-checking anyway, but you may find yourself searching for a bug that is due to the interpreter misinterpreting the t...
How do I compare version numbers in Python?
... PEP 440 versions as “not strict” and therefore doesn’t match modern Python’s notion of what a valid version is.
As distutils.version is undocumented, here's the relevant docstrings.
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Replace all non-alphanumeric characters in a string
... same but allows the underscore as a word character (don't know why): docs.python.org/3.6/library/re.html#index-32
– JHS
Dec 23 '18 at 1:32
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urllib2.HTTPError: HTTP Error 403: Forbidden
I am trying to automate download of historic stock data using python. The URL I am trying to open responds with a CSV file, but I am unable to open using urllib2. I have tried changing user agent as specified in few questions earlier, I even tried to accept response cookies, with no luck. Can you pl...
DistutilsOptionError: must supply either home or prefix/exec-prefix — not both
I've been usually installed python packages through pip.
8 Answers
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More elegant way of declaring multiple variables at the same time
...t least accepting of this idiom, but I suspect that some may consider it Unpythonic. </disclaimer>
Yet another approach, which is likely the most intuitive if you will be using this pattern frequently, is to define your data as a list of flag values (True, False) mapped to flag names (sing...
What is the difference between YAML and JSON?
... YAML can allow an attacker to execute arbitrary code.
Observations:
Python programmers are generally big fans of YAML, because of the use of indentation, rather than bracketed syntax, to indicate levels.
Many programmers consider the attachment of "meaning" to indentation a poor choice.
If...
Python creating a dictionary of lists
...r and more modern choice. setdefault is still useful in older versions of Python (prior to 2.5).
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