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How do I create a Python function with optional arguments?
I have a Python function which takes several arguments. Some of these arguments could be omitted in some scenarios.
2 Answe...
python tuple to dict
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@kevpie The wonderful thing about Python is that there are a hundred ways to express how to do something, each just as interesting as the next.
– bjd2385
Jan 18 '17 at 23:30
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Get IP address of visitors using Flask for Python
... files, using the Flask micro-framework (based on Werkzeug ) which uses Python (2.6 in my case).
10 Answers
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how to draw directed graphs using networkx in python?
... not the only one saying it can't be helped. I couldn't render this with ipython notebook I had to go straight from python which was the problem with getting my edge weights in sooner.
import networkx as nx
import numpy as np
import matplotlib.pyplot as plt
import pylab
G = nx.DiGraph()
G.add_e...
Hashing a dictionary?
...hing needs to be consistent across different machines. Implementations of python on cloud platforms like Heroku and GAE will return different values for hash() on different instances making it useless for anything that must be shared between two or more "machines" (dynos in the case of heroku)
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Find the division remainder of a number
How could I go about finding the division remainder of a number in Python?
12 Answers
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Python dict how to create key or append an element to key?
...nd choose what you like. I've ordered them in a way that I think is most "pythonic", and commented the pros and cons that might not be obvious at first glance:
Using collections.defaultdict:
import collections
dict_x = collections.defaultdict(list)
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dict_x[key].append(value)
Pros: Probably...
Why can't I use a list as a dict key in python?
I'm a bit confused about what can/can't be used as a key for a python dict.
11 Answers
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python-pandas and databases like mysql
... a DataFrame from it. SQLAlchemy makes it easier to combine SQL conditions Pythonically if you intend to mix and match things over and over.
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy import Table
from sqlalchemy import create_engine
from sqlalchemy.orm import sessionma...
Why is using 'eval' a bad practice?
... is a vector for code injection, and is dangerous in a way that most other Python functions are not. That doesn't mean you shouldn't use it at all, but I think you should use it judiciously.
– Owen S.
Aug 19 '11 at 16:52
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