SyntaxError: EOL while scanning string literal

Programmers experience SyntaxError: EOL while scanning string literal in multiple cases like if the string is not close, if the string uses the wrong symbol, or if you do not use triple quotation in a …

EOL while scanning string literal

Programmers experience SyntaxError: EOL while scanning string literal in multiple cases like if the string is not close, if the string uses the wrong symbol, or if you do not use triple quotation in a multi-line string. 

SyntaxError: Python experience SyntaxError, if there is anything wrong or unusual or missing in the syntax of the program during its compilation. The SyntaxError is mostly simple to fix once you capture the problematic area.

This error can be generated for even a single missing bracket, or missing comma, or missing semicolon, or even if you put something extra.

Because Python is an interpreted programming language, so it executes the code line by line rather to completely convert the code to a low level at once. During the execution of code if Python found something exceptional then it generates SyntaxError.

String literal in Python:  The string literal in Python is a set of characters enclosed in quotation marks (‘’). In Python, a string literal can be assigned in three ways single quotation (‘’), double quotation (“”) and triple quotation (“”” “””)

SyntaxError- EOL while scanning string literal:

EOL stands for End of Line. The error EOL while scanning string literal generates when the Python interpreter reached the end of the line while scanning the string literal. As strings are enclosed in a single or double quotation mark.

So when the Python interpreter reached the last character of the string and does not find the closing quotation marks then it generates the EOL while scanning the string literal SyntaxError. This error can be generated due to other causes also. 

Causes of SyntaxError: EOL while scanning string literal:

Following are the causes of this error.

  • String is not enclosed.
  • String enclose using wrong symbol
  • Declare multi-line string does not use triple quotation. 
  • Unusual number of Backslashes in Raw string.

1. String is not enclosed:

As string literal is a set of characters that enclosed in quotation marks. There are three types of string literals single quotation (‘’), double quotation (“ ”) and triple quotation (“”” “””).

Example 1:

S= ‘Today is Monday…
Print (s)

Example 2: 

S= “Today is Monday…
 Print (s)

Example 3: 

S= ‘Today is “Monday”…
 Print (s)

Example 4: 

 S=”””Today is Monday…
Print (s)

In all the above-mentioned examples you can see that there is a missing closure quotation. So, all of these examples will generate the EOL while scanning string literal error.

EOL while scanning string literal

2. String enclose using the wrong symbol:

If the type of quote used at the opening of the string literal is different from the type of quote used at the end then EOL while scanning string literal error will generate. 

Example 1:

S=’Today is Monday”
Print(s)
    
    Print (s)

Example 2:

 S=’Today is “Monday””
Print(S)

Both the above-mentioned examples have different types of opening and closure quotation marks. Both the examples generate the EOL while scanning string literal error.

EOL while scanning string literal

3. Declare multi-line string does not use triple quotation:

Python supports the multiple-line string literal as well. But the restriction in a multi-line string is that it should be under the triple quotation marks. Otherwise, it will generate the EOL while scanning string literal error. 

Example:

S=’Today is Monday
          the first working day of the week”
    print(s)

The above-mentioned example has a multi-line string. But rather to enclosed in a triple quotation mark, it is enclosing in double quotation mark. This will again generate the EOL while scanning string literal error. 

EOL while scanning string literal

4. Unusual number of Backslashes in Raw string:

Backslashes are used as special characters in a string. If you want to add a double-quoted string in a string then you can use backslashes.

# invalid
x = "\"
x = "\\\"
x = "\\\"\"
 
# valid
x = "\\"
x = "\\\\"
x = "\\\""
 

Conclusion:

Python provides an easiness to use a string in multiple ways as a sequence of characters. The problem generates if there is an error in the syntax.

SyntaxError: EOL while scanning string literals generates if the string is not close, if the string uses the wrong symbol, or if you do not use triple quotation in a multi-line string or use the invalid number of backslashes.

This error can be solved directly by inculcating the right syntax to the string literal.

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