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Can I use __init__.py to define global variables?
... This should have been the accepted answer. If you are working with Python 2.5 or higher you can also use an explicit relative import as well as described here: from . import MY_CONSTANT
– ThatAintWorking
Feb 12 '14 at 17:17
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Logical operators for boolean indexing in Pandas
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When you say
(a['x']==1) and (a['y']==10)
You are implicitly asking Python to convert (a['x']==1) and (a['y']==10) to boolean values.
NumPy arrays (of length greater than 1) and Pandas objects such as Series do not have a boolean value -- in other words, they raise
ValueError: The truth v...
Checking if a string can be converted to float in Python
I've got some Python code that runs through a list of strings and converts them to integers or floating point numbers if possible. Doing this for integers is pretty easy
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Python set to list
How can I convert a set to a list in Python? Using
7 Answers
7
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Accessing elements of Python dictionary by index
...bout the order, then you might consider using an OrderedDict:
http://docs.python.org/dev/library/collections.html#collections.OrderedDict
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How to create a density plot in matplotlib?
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@Justin Nice answer (+1) and not wanting to start any Python v R flame wars or anything, but I am loving the way R works with data much more succinctly that python and other languages. I'm sure python has lots of good points over R (I'm not a Python user so I'm so totally unifor...
Convert Year/Month/Day to Day of Year in Python
I'm using the Python datetime module, i.e.:
7 Answers
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Python pandas: fill a dataframe row by row
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Not the answer you're looking for? Browse other questions tagged python dataframe row pandas or ask your own question.
How to replace multiple substrings of a string?
...he replacement
rep = dict((re.escape(k), v) for k, v in rep.iteritems())
#Python 3 renamed dict.iteritems to dict.items so use rep.items() for latest versions
pattern = re.compile("|".join(rep.keys()))
text = pattern.sub(lambda m: rep[re.escape(m.group(0))], text)
For example:
>>> patte...
Google Authenticator implementation in Python
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for python 3: change: ord(h[19]) & 15 into : o = h[19] & 15 Thanks BTW
– Orville
Apr 18 '19 at 12:04
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