string-formatting

I want to format a number with a decimal point in it with leading zeros. This >>> '3.3'.zfill(5) 003.3 considers all the digits and even the decimal point. Is there a function in python that considers only the whole part? I only need to format simple numbers with no more than five decimal places. Also, using %5f seems to consider trailing instead of leading zeros. Starting with a string as your example does, you could write a small function such as this to do what you want: def zpad(val, n): bits = val.split('.') return "%s.%s" % (bits[0].zfill(n), bits[1]) >>> zpad('3.3', 5) '00003.3' Is that

New formatting lets us do this: '{:.<12}'.format('##') - optional fill character. Can we do that using old formatting? (I know we can fill with spaces '%-12s' % '##' ) Also, old formatting lets us do this: '%-*s' % (12, '##') - variable length. Can we do that using new formatting? For doing variable length using new-format , you can use nesting of replacements - >>> '{:{}<{}}'.format('##','.',12) '##..........' >>> '{:{}<{}}'.format('##','-',12) '##----------' >>> '{:{}<{}}'.format('##','-',20) '##------------------' Even spaces as fill character - >>> '{:{}<{}}'.format('##',' ',20) '## '

This question already has answers here : Closed 5 years ago . How do I round a decimal value to 2 decimal places (for output on a page) (16 answers) I am getting data from a csv file and parsing it to my application. In my csv file I have a column price whose value I use as of course the price of an item in my project. However, the price in the csv file does not contain trailing 0s, For example, if the price of and item is $5.00 , the csv file has it as $5 , if the price is $9.60 , the csv has it as $9.6 . Other prices such as $9.56 are fine though. This is how I retrieve the price from the

while (rdr.Read()) { Console.WriteLine("Product: {0,-35} Total: {1,2}", rdr["ProductName"], rdr["Total"]); } What does {0,-35} mean in this code? A more simple line would be: Console.WriteLine("{0}", 5); The function accepts any number of arguments. They will be inserted into the string at the corresponding index. In this case, index zero holds the integer 5. The result is the string "5". Now, you have the option the specify a format string as well as an index. Like so: Console.WriteLine("{0:0.00}", 5); This formats the 5 with 0.00 , resulting in 5.00 . Thats the case for numbers, but I think

I'm trying use StringFormat to insert apostrophies (apostrophe's?) around a value that is bound to a TextBlock: <TextBlock Text="{Binding MyValue, StringFormat='The value is &apos;{0}&apos;'}"/> However, I get a compile error: Names and Values in a MarkupExtension cannot contain quotes. The MarkupExtension arguments ' MyValue, StringFormat='The value is '{0}''}' are not valid. I do notice that it does work for quotes though: <TextBlock Text="{Binding MyValue, StringFormat='The value is "{0}"'}"/> Is this a bug with StringFormat? I'm not sure if it's a bug, but I tested this method, and it