How to print a string literally in Python

问题

this is probably really simple but I can't find it.

I need to print what a string in Python contains. I'm collecting data from a serial port and I need to know if it is sending CR or CRLF + other control codes that are not ascii.

As an example say I had

s = "ttaassdd\n\rssleeroo"

then I would like to do is:

print s

Where it would show the \n\r rather than covert them into escape characters.

回答1:

Try with:

print repr(s)
>>> 'ttaassdd\n\rssleeroo'

回答2:

Saving your string as 'raw' string could also do the job.

(As in, by putting an 'r' in front of the string, like the example here)

    >>> s = r"ttaassdd\n\rssleeroo"
    >>> print s
    ttaassdd\n\rssleeroo

来源：https://stackoverflow.com/questions/6903551/how-to-print-a-string-literally-in-python