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Split list into multiple lists with fixed number of elements
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214
I think you're looking for grouped. It returns an iterator, but you can convert the result to a...
One-line list comprehension: if-else variants
...ssion you're returning for each element. Thus you need:
[ x if x%2 else x*100 for x in range(1, 10) ]
The confusion arises from the fact you're using a filter in the first example, but not in the second. In the second example you're only mapping each value to another, using a ternary-operator exp...
Regex to match a digit two or four times
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145
There's no specific syntax for that, but there are lots of ways to do it:
(?:\d{4}|\d{2}) ...
Remove duplicated rows using dplyr
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139
Note: dplyr now contains the distinct function for this purpose.
Original answer below:
li...
Python Matplotlib figure title overlaps axes label when using twiny
...ther it is a new feature in later versions of matplotlib, but at least for 1.3.1, this is simply:
plt.title(figure_title, y=1.08)
This also works for plt.suptitle(), but not (yet) for plt.xlabel(), etc.
share
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What does the tilde (~) mean in my composer.json file?
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143
Tilde means next significant release. In your case, it is equivalent to >= 2.0, < 3.0.
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Process all arguments except the first one (in a bash script)
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edited May 23 '17 at 10:31
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answered Jan 29 '12 at 22:32
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How to print to console in pytest?
...n that particular test.
For example,
def test_good():
for i in range(1000):
print(i)
def test_bad():
print('this should fail!')
assert False
Results in the following output:
>>> py.test tmp.py
============================= test session starts ======================...
Best way to find the intersection of multiple sets?
... use multiple arguments to set.intersection(), like
u = set.intersection(s1, s2, s3)
If the sets are in a list, this translates to:
u = set.intersection(*setlist)
where *a_list is list expansion
Note that set.intersection is not a static method, but this uses the functional notation to apply ...
What does value & 0xff do in Java?
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173
It sets result to the (unsigned) value resulting from putting the 8 bits of value in the lowes...