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a \ before all \, which becomes \\, \\ is escaped to \, thus avoiding \ escaping n, t, r and other characters, and \ no longer Represents escape characters (escaping is prohibited)""" str1 ='\n' # n is escaped, representing a newline characterprint('str1:', str1, repr(str1), len(str1)) str2 =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

5 votes172 views1 answer
Python start simplehttpserver
Python
15 votes204 views3 answers
Clear window python console
Python
6 votes183 views2 answers
ModelForm
Python
0 vote182 views1 answer
Bar plot bokeh
Python
0 vote185 views1 answer
Youtube bot python
Python
1 vote177 views3 answers
Django reverse lazy
Python
0 vote165 views1 answer
Show which columns in dataframe have NA
Python
0 vote181 views1 answer
Read csv boto3
Python
0 vote190 views1 answer
"DjangoJSONEncoder" is not defined
Python
0 vote178 views1 answer
Modifiying line plots
Python