They are used for formatting strings. %s acts a placeholder for a string while %d acts as a placeholder for a number. Their associated values are passed in via a tuple using the % operator. name=”marcog” number = 42 print ‘%s %d’ % (name, number) will print marcog 42. Note that name is a string … Read more
From the docs: The format specifiers for general, character, and numeric types have the following syntax: %[argument_index$][flags][width][.precision]conversion The optional argument_index is a decimal integer indicating the position of the argument in the argument list. The first argument is referenced by “1$”, the second by “2$”, etc. String.format(“%1$s %1$s %1$s %1$s %1$s %1$s”, hello);
The %s specifier converts the object using str(), and %r converts it using repr(). For some objects such as integers, they yield the same result, but repr() is special in that (for types where this is possible) it conventionally returns a result that is valid Python syntax, which could be used to unambiguously recreate the … Read more
>>> print “%r, %r” % (True, False) True, False This is not specific to boolean values – %r calls the __repr__ method on the argument. %s (for str) should also work.
Try this approach using the newer str.format syntax: line_new = ‘{:>12} {:>12} {:>12}’.format(word[0], word[1], word[2]) And here’s how to do it using the old % syntax (useful for older versions of Python that don’t support str.format): line_new = ‘%12s %12s %12s’ % (word[0], word[1], word[2])
The datetime class has a method strftime. The Python docs documents the different formats it accepts: Python 2: strftime() Behavior Python 3: strftime() Behavior For this specific example, it would look something like: my_datetime.strftime(“%B %d, %Y”)
It is a string formatting syntax (which it borrows from C). Please see “PyFormat”: Python supports formatting values into strings. Although this can include very complicated expressions, the most basic usage is to insert values into a string with the %s placeholder. Here is a really simple example: #Python 2 name = raw_input(“who are you? … Read more
Yes, you can. There is conditional formatting. See Conditional formatting in MSDN eg: string MyString = number.ToString(“+0;-#”); Where each section separated by a semicolon represents positive and negative numbers or: string MyString = number.ToString(“+#;-#;0”); if you don’t want the zero to have a plus sign.
Use preg_replace() and instead of [ \t\n\r] use \s: $output = preg_replace(‘!\s+!’, ‘ ‘, $input); From Regular Expression Basic Syntax Reference: \d, \w and \s Shorthand character classes matching digits, word characters (letters, digits, and underscores), and whitespace (spaces, tabs, and line breaks). Can be used inside and outside character classes.
from decimal import Decimal ‘%.2E’ % Decimal(‘40800000000.00000000000000’) # returns ‘4.08E+10′ In your ‘40800000000.00000000000000’ there are many more significant zeros that have the same meaning as any other digit. That’s why you have to tell explicitly where you want to stop. If you want to remove all trailing zeros automatically, you can try: def format_e(n): a=”%E” … Read more