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a \ before all \, which becomes \\, \\ is escaped to \, thus avoiding \ escaping n, t, r and other characters, and \ no longer Represents escape characters (escaping is prohibited)""" str1 ='\n' # n is escaped, representing a newline characterprint('str1:', str1, repr(str1), len(str1)) str2 =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

13 votes124 views1 answer
Selenium webdriver python
Python
0 vote120 views1 answer
How change column strin of list data type to list
Python
14 votes155 views1 answer
How to find the version of python command linw
Python
4 votes126 views3 answers
Fill nan values with mean
Python
0 vote107 views1 answer
Python toupls
Python
0 vote114 views1 answer
Python set workspace dir
Python
0 vote125 views1 answer
Python list of dictionaries to list
Python
2 votes115 views1 answer
Python USD to Euro Converter
Python
7 votes151 views4 answers
Pip update django
Python Django
0 vote115 views1 answer
Form valid
Python