为什么在Python的print语句末尾使用\\？

Question

Consider the code:

firstName = raw_input("Your fist Name: ")
lastName = raw_input("Your last Name: ")
print "Hello %s, May I call you" \
"Mr. %s?" % (firstName,lastName)

In line 3, what is the use of \\ ?

Answer 1

它允许您进行换行并在下一行继续您的语句

Answer 2

The \\ tells Python that the statement continues on the next line. So, the print statement doesn't end on the first line, it continues on the next.

print "Hello %s, May I call you" \
"Mr. %s?" % (firstName,lastName)

Is the same as:

print "Hello %s, May I call youMr. %s?" % (firstName,lastName)

Answer 3

The \\ character is used to break up long lines so they're easier to read and manage. The third and fourth lines could have been written as a single line without the \\ instead:

print "Hello %s, May I call youMr. %s?" % (firstName,lastName)

(note there is no space between "you" and "Mr." in the original post either)

Answer 4

使您能够将一行字符串溢出到多行。