Python Basics-high-speed transformation: strings

A python string is worth saying.

Look first:

>>>"Hello world!"‘Hello world!‘

We write a double-quote, but after printing it is a single quote.

What's the difference?

The answer is that there is no difference between the single and double cited .

>>>‘Let‘s go!‘

The above code is wrong, assuming that the string itself includes a single argument, then use the double-cited
Identical, assuming that the string itself has a double argument. Then you need to use a single citation .

Then the question comes again. What if a string includes both a single and double-cited arguments?
Need to be escaped :

\"I\‘m OK\".‘

Stitching strings:

>>>"Let‘s Say"  ‘"Hello, world!"‘‘Let\‘s Say "Hello, world!"‘

Write two strings in a row. Python will be stitched together!

Long String
Enclosed in three-lead, it is possible to cross the line:

print‘‘‘This is avery verylong long string!‘‘‘

Raw String
Forbidden Escape, original string has R start !

printr‘\(~_~)/ \(~_~)/‘

Unicode string
Use the U prefix to represent a Unicode string

printu‘汉字‘

Python Basics-high-speed transformation: strings