string-formatting

I'm using Python's logging mechanism to print output to the screen. I could do this with print statements, but I want to allow a finer-tuned granularity for the user to disable certain types of output. I like the format printed for errors, but would prefer a simpler format when the output level is "info." For example: logger.error("Running cmd failed") logger.info("Running cmd passed") In this example, I would like the format of the error to be printed differently: # error Aug 27, 2009 - ERROR: Running cmd failed # info Running cmd passed Is it possible to have different formats for different

I need to output 4 different floats to two decimal places. This is what I have: print '%.2f' % var1,'kg =','%.2f' % var2,'lb =','%.2f' % var3,'gal =','%.2f' % var4,'l' Which is very unclean, and looks bad. Is there a way to make any float in that out put '%.2f'? Note: Using Python 2.6. Well I would atleast clean it up as follows: print "%.2f kg = %.2f lb = %.2f gal = %.2f l" % (var1, var2, var3, var4) If you just want to convert the values to nice looking strings do the following: twodecimals = ["%.2f" % v for v in vars] Alternatively, you could also print out the units like you have in your

This question already has an answer here: C++: “std::endl” vs “\n” 13 answers Is there a reason to use endl with cout when I can just use \n ? My C++ book says to use endl, but I don't see why. Is \n not supported as widely as endl , or am I missing something? endl appends '\n' to the stream and calls flush() on the stream. So cout << x << endl; is equivalent to cout << x << '\n'; cout.flush(); A stream may use an internal buffer which gets actually streamed when the stream is flushed. In case of cout you may not notice the difference since it's somehow synchronized ( tied ) with cin , but for

E.g. in the following example: string commandText = string.Format("Select * from {0}", filename); How does the above work? {0} is a placeholder for the first object given; in this case that's filename , so it will insert whatever filename evaluates to in place of {0} . Similarly, of course you could use {1} and that would be replaced with the second parameter passed, etc. {0} refers to the second parameter passed into String.Format . {1} refers to the third, {2} to the fourth, etc. For example: String.Format("The {0} brown {1} jumps {2} the {3} dog.", "quick", "fox", "over", "lazy") Evaluates

On a EN-US regional system, what does B or b represent in a format mask? While it does nothing in VBA's Format function , both the TEXT function and Custom Number Formatting recognize b as a legal Number Format Code and return a number that I cannot determine the origin of. To further confuse matters, larger numbers return different values when formatted with bbbb and while blocks of sequential numbers return the same value, there are transitions when they jump ahead a digit. I do know that Excel expects the format mask to be either bb or bbbb because if B or b is supplied as a custom number