Professional IronPython

upper()
: Returns the uppercase version of the string.
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Working with Existing Objects
 
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zfill(int width)
: Returns a string that has zeros placed on the left side to pad the string 
to the length specified by width. For example, if you typed 
MyString.zfill(40)
, you’d 
receive a string that is 40 characters long with as many zeros on the left side as required to 
produce the required length.
Formatting String Output
String formatting can become quite complex in Python and IronPython. However, if you start with 
the basics, you’ll find that you can usually figure out the complex elements without too much trouble. 
A basic format string contains one or more fields. A field is simply some text that appears within curly 
braces that you replace with a value. In fact, if you’ve worked with any .NET language, you’ve already 
used fields. Here’s a simple sentence that contains a field.
MyString = ‘Hello {0}‘
Of course, you won’t want to print this string directly onscreen. Instead, you’ll want to replace 
{0}
with some other value. In order to do this, you can use the 
format()
method as shown here.
MyString.format(‘George’)
The interpreter replaces the 
{0}
with the name 
George
. Consequently, you see ‘Hello George’ as 
output from these two lines of code. You have a number of options when working with replaceable 
variables in a string. The following list shows just a few of the options:
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MyString = ‘Hello {0}‘
: Provides a simple replacement from a list of input arguments. 
The input arguments must appear in the order required in the string.
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