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How to get first element in a list of tuples?
...iterations = 100000
init_time = timeit.timeit('''a = [(i, u'abc') for i in range(1000)]''', number=iterations)/iterations
print(timeit.timeit('''a = [(i, u'abc') for i in range(1000)]\nb = [i[0] for i in a]''', number=iterations)/iterations - init_time)
print(timeit.timeit('''a = [(i, u'abc') for i ...
How do I put double quotes in a string in vba?
...way is to double up on the quotes to handle a quote.
Worksheets("Sheet1").Range("A1").Formula = "IF(Sheet1!A1=0,"""",Sheet1!A1)"
Some people like to use CHR(34)*:
Worksheets("Sheet1").Range("A1").Formula = "IF(Sheet1!A1=0," & CHR(34) & CHR(34) & ",Sheet1!A1)"
*Note: CHAR() is use...
Why must a nonlinear activation function be used in a backpropagation neural network? [closed]
...re, nonlinear functions must be continuous and differentiable between this range.
A neural network must be able to take any input from -infinity to +infinite, but it should be able to map it to an output that ranges between {0,1} or between {-1,1} in some cases - thus the need for activation functio...
Changing the color of the axis, ticks and labels for a plot in matplotlib
...otlib.pyplot as plt
fig = plt.figure()
ax = fig.add_subplot(111)
ax.plot(range(10))
ax.set_xlabel('X-axis')
ax.set_ylabel('Y-axis')
ax.spines['bottom'].set_color('red')
ax.spines['top'].set_color('red')
ax.xaxis.label.set_color('red')
ax.tick_params(axis='x', colors='red')
plt.show()
...
What's the maximum value for an int in PHP?
...ntegers, particularly older Windows builds of PHP
Values outside of these ranges are represented by floating point values, as are non-integer values within these ranges. The interpreter will automatically determine when this switch to floating point needs to happen based on whether the result valu...
How many parameters are too many? [closed]
... <algorithm> takes more than 3 parameters, because just one iterator range is 2 already. It's just the nature of programming with iterators (i.e. generic programming with STL collections).
– Steve Jessop
Nov 27 '08 at 13:49
...
Pandas dataframe get first row of each group
...like the first three, for example, use a sequence like nth((0,1,2)) or nth(range(3)).
– Ronan Paixão
Sep 8 '16 at 2:34
...
List of zeros in python [duplicate]
... only zeros? I want to be able to create a zeros list for each int in range(10)
8 Answers
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What is the difference between atan and atan2 in C++?
...
One small detail, the range -π/2 <= atan() <= π/2 actually includes one point (pi/2) from quadrant II.
– Z boson
Jul 2 '15 at 11:30
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What's the function like sum() but for multiplication? product()?
...iterable):
return reduce(operator.mul, iterable, 1)
>>> prod(range(1, 5))
24
Note, in Python 3, the reduce() function was moved to the functools module.
Specific case: Factorials
As a side note, the primary motivating use case for prod() is to compute factorials. We already have supp...