python2.7 handling Unicode and ASCII string blending issues

python2.7 default encoding mode is ASCII code, the following can be queried:

Import syssys.getdefaultencoding ()

If you are calculating, comparing, and connecting directly between Unicode and ASCII strings, you will get an error:

' Hello '  = u' hello '= = U

__main__: 1:unicodewarning:unicode equal comparison failed to convert both arguments to unicode-interpreting t Hem as being unequal

The reason for this is that Python converts STR to Unicode and, of course, the results are Unicode, while both STR and Unicode are involved.

The right approach is:

Import sysreload (SYS) sys.setdefaultencoding ('utf-8' Hello '  = u' hello '= = U

The result will return true

ref:http://in355hz.iteye.com/blog/1860787

python2.7 handling Unicode and ASCII string blending issues