大约有 44,000 项符合查询结果（耗时：0.0578秒） [XML]
Is it possible to use 'else' in a list comprehension? [duplicate]
...used in comprehension statements:
>>> [a if a else 2 for a in [0,1,0,3]]
[2, 1, 2, 3]
So for your example,
table = ''.join(chr(index) if index in ords_to_keep else replace_with
for index in xrange(15))
...
Equation (expression) parser with precedence?
...ce you need to think recursively, for example, using your sample string,
1+11*5
to do this manually, you would have to read the 1, then see the plus and start a whole new recursive parse "session" starting with 11... and make sure to parse the 11 * 5 into its own factor, yielding a parse tree wi...
ld cannot find an existing library
...
158
The problem is the linker is looking for libmagic.so but you only have libmagic.so.1
A quick ...
Sort array of objects by string property value
...
1
2
Next
4103
...
Check if a number has a decimal place/is a whole number
...
Using modulus will work:
num % 1 != 0
// 23 % 1 = 0
// 23.5 % 1 = 0.5
Note that this is based on the numerical value of the number, regardless of format. It treats numerical strings containing whole numbers with a fixed decimal point the same as intege...
Combining two Series into a DataFrame in pandas
I have two Series s1 and s2 with the same (non-consecutive) indices. How do I combine s1 and s2 to being two columns in a DataFrame and keep one of the indices as a third column?
...