大约有 45,000 项符合查询结果(耗时:0.0451秒) [XML]
Getting SyntaxError for print with keyword argument end=' '
...re you sure you are using Python 3.x? The syntax isn't available in Python 2.x because print is still a statement.
print("foo" % bar, end=" ")
in Python 2.x is identical to
print ("foo" % bar, end=" ")
or
print "foo" % bar, end=" "
i.e. as a call to print with a tuple as argument.
That's o...
Apply pandas function to column to create multiple new columns?
...
Building off of user1827356 's answer, you can do the assignment in one pass using df.merge:
df.merge(df.textcol.apply(lambda s: pd.Series({'feature1':s+1, 'feature2':s-1})),
left_index=True, right_index=True)
textcol feature1 feature...
How to print last two columns using awk
...
awk '{print $(NF-1),"\t",$NF}' file
this assumes that you have at least 2 fields.
share
|
improve this answer
|
follow
|
...
Python data structure sort list alphabetically
...
241
[] denotes a list, () denotes a tuple and {} denotes a dictionary. You should take a look at t...
Jackson serialization: ignore empty values (or null)
I'm currently using jackson 2.1.4 and I'm having some trouble ignoring fields when I'm converting an object to a JSON string.
...
How do I check which version of NumPy I'm using?
...
392
import numpy
numpy.version.version
...
Javascript reduce on array of objects
...
292
After the first iteration your're returning a number and then trying to get property x of it t...
What is more efficient? Using pow to square or just multiply it with itself?
...cout << elapsed << " "; \
\
return x; \
}
TEST(1, b)
TEST(2, b*b)
TEST(3, b*b*b)
TEST(4, b*b*b*b)
TEST(5, b*b*b*b*b)
template <int exponent>
double testpow(double base, long loops)
{
double x = 0.0;
boost::posix_time::ptime startTime = now();
for (long i=0; i<...
Regular expression for first and last name
...
23 Answers
23
Active
...
How do I get the color from a hexadecimal color code using .NET?
...
answered Jan 21 '10 at 14:32
ThorarinThorarin
42.1k1111 gold badges6868 silver badges107107 bronze badges
...