R before string python

"""In the string, there is a special character: the escape character \, such as: \a Bell (BEL) \b backspace \t tab \r Carriage return (CR), move the current position to the beginning of this line \n Line feed (LF), move the current position to the beginning of the next line \\ represents a backslash \ \'represents a single quote ' \" represents a double quote " \? represents a question mark? In the string, it will be automatically escaped when it encounters the above character combination Adding r before a string in Python is equivalent to adding a \ before all \, which becomes \\, \\ is escaped to \, thus avoiding \ escaping n, t, r and other characters, and \ no longer Represents escape characters (escaping is prohibited)""" str1 ='\n' # n is escaped, representing a newline characterprint('str1:', str1, repr(str1), len(str1)) str2 = r'\n' # Add r, add another \ before \. According to the left-to-right operation rule, \\ escapes as \, n exists alone, and the final result is two characters: \ nprint('str2:', str2, repr(str2), len(str2), str2[0], str2[1])  # str2: \n '\\n' 2 \ n str3 ='\\n' # Equivalent to str2print('str3:', str3, repr(str3), len(str3), str3[0], str3[1])  # str3: \n '\\n' 2 \ n  # Thinking: Why do the following paths report errors? # Reason: \ is recognized as an escape character combined with \U to cause an errorpath1 = 'C:\Users\Administrator\Desktop\1.jpg' # Modify:path2 = 'C:\\Users\\Administrator\\Desktop\\1.jpg'path3 = r'C:\Users\Administrator\Desktop\1.jpg'

-1

Source: programmersought.com

Similar codes

6 votes137 views1 answer
Python print return code of requests
Python
0 vote132 views2 answers
Converting pandas._libs.tslibs.timedeltas.Timedelta to days
Python
0 vote123 views1 answer
Doc2vec similarity
Python
0 vote128 views1 answer
File attributes in os
Python
0 vote118 views1 answer
Python youtube_dl custom path
Python
0 vote131 views1 answer
Os file size python
Python
1 vote155 views1 answer
How to create chess board numpy
Python
0 vote143 views1 answer
How to read panda column
Python
0 vote129 views1 answer
Python pandas markdown print export
Python
5 votes133 views2 answers
Python yaml parser
Python