I've noticed that while working on one or two tickets, if I step away, I'm not sure what I worked on, what changed, etcetera. ...

How do I check if a file exists or not, without using the try statement? 39 Answers ...

...;>> math.copysign(1, -4) -1.0 >>> math.copysign(1, 3) 1.0 If you get sick of passing two whole arguments, you can implement sign this way, and it will still be compatible with the IEEE stuff mentioned by others: >>> sign = functools.partial(math.copysign, 1) # either of th...

...ty of this question, I bet that mistake has been made many times already. If you're using python3.6 or above, you can use the new secrets module as mentioned in MSeifert's answer: ''.join(secrets.choice(string.ascii_uppercase + string.digits) for _ in range(N)) The module docs also discuss conve...

I want to know the difference between using BaseAdapter and ArrayAdapter . 6 Answers ...

I know that if I want to re-raise an exception, I simple use raise without arguments in the respective except block. But given a nested expression like ...

...ment that stores the variables when the function is called. In this specific case, as Joshua mentioned, you are trying to access the url function as a variable. If you define a variable named url, then the error goes away. As a matter of good practise, you should usually avoid naming variables ...

... If you use prepareForSegue:sender:then you won't have as much to change if you later decide to trigger the segue from some control outside the table view. The prepareForSegue:sender: message is sent to the current view contr...

I want to store a file as /a/b/c/d.txt, but I do not know if any of these directories exist and need to recursively create them if necessary. How can one do this in ruby? ...

Often I need to check if some value is blank and write that "No data present" like that: 6 Answers ...