Why use \' escape sequence instead of just '?

Question

Is there any difference between:

print "I am John Doe\'s cousin."

and:

print "I am John Doe's cousin."

Answer 1

When you use the line with out the \' and if you wrote it using single quotation marks(an apostrophe) python would read the line as

print ('I am doe')

then would give an error because python doesn't expect anything after the apostrophe

when you use a backslash python takes the apostrophe as a string and not an end of string

when you use the regular quotation mark it doesn't matter, python will read it the same