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NumPy or Pandas: Keeping array type as integer while having a NaN value
...values. This enables vectorised NumPy-based calculations where, otherwise, Python-level loops would be processed.
The docs do suggest : "One possibility is to use dtype=object arrays instead." For example:
s = pd.Series([1, 2, 3, np.nan])
print(s.astype(object))
0 1
1 2
2 3
3 N...
How do I check in SQLite whether a table exists?
...
This is a great way to determine if a table exists in Python.
– Michael Murphy
Dec 9 '14 at 7:01
...
Difference between map and collect in Ruby?
... is also a frequently used operation in high level languages such as Perl, Python and Ruby; the operation is called map in all three of these languages. A collect alias for map is also provided in Ruby (from Smalltalk) [emphasis mine]. Common Lisp provides a family of map-like functions; the one cor...
Get pandas.read_csv to read empty values as empty string instead of nan
...
Not the answer you're looking for? Browse other questions tagged python csv pandas or ask your own question.
std::string length() and size() member functions
...ught to be one, and ideally only one, obvious way to do it" (as the Zen of Python recites) will, I guess, mostly agree with your doubts, @Naveen, while fans of Perl's "There's more than one way to do it" (or SQL's syntax with a bazillion optional "noise words" giving umpteen identically equivalent s...
Is Java RegEx case-insensitive?
... Thanks for the answer. This is exactily I was looking for. In python we have re.IGNORECASE was looking for similar answer in JAVA.
– Doogle
Feb 3 '19 at 13:42
add...
Post data to JsonP
...n. The only way to execute POST requests in a browser is via HTML forms or XMLHttpRequest.
– friedo
May 10 '12 at 0:20
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How to pick a new color for each plotted line within a figure in matplotlib?
...tplotlibrc file.
If you don't know where that file is, do the following in python:
import matplotlib
matplotlib.matplotlib_fname()
This will show you the path to your currently used matplotlibrc file.
In that file you will find amongst many other settings also the one for axes.color.cycle. Just p...
Debugging “Element is not clickable at point” error
...works well in the case where the element is wrapped in a div or a span. In Python I used .send_keys('\n') to simulate the click and work around the issue in Chrome.
– G-J
Feb 16 '16 at 18:07
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Mocha / Chai expect.to.throw not catching thrown errors
...ample given.
homegrownAssertThrows(model.get, z);
// a style common in Python, but not in JavaScript
You can check for specific errors using any assertion library:
Node
assert.throws(() => x.y.z);
assert.throws(() => x.y.z, ReferenceError);
assert.throws(() => x.y.z, Reference...