each one is double-precision ( bitsvalue they can also be expressed using scientific notationin [ ]fval in [ ]fval - in python integer division not resulting in whole number will always yield floating point numberin [ ] out[ ] in python and below (which some readers will likely be using)you can enable this behavior by default by putting the following cryptic-looking statement at the top of your modulefrom __future__ import division without this in placeyou can always explicitly convert the denominator into floating point numberin [ ] float( out[ ] to get -style integer division (which drops the fractional part if the result is not whole number)use the floor division operator //in [ ] / out[ ] complex numbers are written using for the imaginary partin [ ]cval in [ ]cval ( jout[ ]( + jstrings many people use python for its powerful and flexible built-in string processing capabilities you can write string literal using either single quotes or double quotes " 'one way of writing stringb "another wayfor multiline strings with line breaksyou can use triple quoteseither ''or """ ""this is longer string that spans multiple lines ""python strings are immutableyou cannot modify string without creating new string appendixpython language essentials www it-ebooks info