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Why does Popen.communicate() return b'hi\n' instead of 'hi'?
Can someone explain why the result I want, "hi", is preceded with a letter 'b' and followed with a newline?
4 Answers
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Does Ruby regular expression have a not match operator like “!~” in Perl?
I just want to know whether ruby regex has a not match operator just like !~ in perl. I feel it's inconvenient to use (?!xxx) or (?<!xxxx) because you cannot use regex patterns in the xxx part.
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What is the default initialization of an array in Java?
So I'm declaring and initializing an int array:
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How can I check the size of a collection within a Django template?
I have a list in my Django template. I want to do something only if the size of the list is greater than zero.
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Alter MySQL table to add comments on columns
I have been checking the MySQL Documentation for ALTER TABLE and it does not seem to include a way to add or modify a comment to a column. How can I do this?
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Why are floating point numbers inaccurate?
Why do some numbers lose accuracy when stored as floating point numbers?
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Python: using a recursive algorithm as a generator
Recently I wrote a function to generate certain sequences with nontrivial constraints. The problem came with a natural recursive solution. Now it happens that, even for relatively small input, the sequences are several thousands, thus I would prefer to use my algorithm as a generator instead of usin...
Sass negative variable value?
I have a couple of scss selectors where I use the same amount positive and negative, as in:
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Convert an integer to a float number
How do I convert an integer value to float64 type?
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How to make a HTML Page in A4 paper size page(s)?
Is it possible to make a HTML page behave, for example, like a A4-sized page in MS Word?
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