---input---
>>> exec('"')
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "<string>", line 1
    "
     ^
SyntaxError: EOL while scanning string literal

>>> exec('"')
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "<string>", line 1, in <module>
    "
     ^
SyntaxError: EOL while scanning string literal

---tokens---
'>>> '        Generic.Prompt
'exec'        Name
'('           Punctuation
"'"           Literal.String.Single
'"'           Literal.String.Single
"'"           Literal.String.Single
')'           Punctuation
'\n'          Text.Whitespace

'Traceback (most recent call last):\n' Generic.Traceback

'  File '     Text
'"<stdin>"'   Name.Builtin
', line '     Text
'1'           Literal.Number
', in '       Text
'<module>'    Name
'\n'          Text.Whitespace

'  File '     Text
'"<string>"'  Name.Builtin
', line '     Text
'1'           Literal.Number
'\n'          Text.Whitespace

'    '        Text.Whitespace
'"'           Literal.String.Double
'\n'          Text.Whitespace

'     '       Text.Whitespace
'^'           Punctuation.Marker
'\n'          Text.Whitespace

'SyntaxError' Generic.Error
': '          Text
'EOL while scanning string literal' Name
'\n'          Text.Whitespace

'\n'          Text.Whitespace

''            Text
'>>> '        Generic.Prompt
'exec'        Name
'('           Punctuation
"'"           Literal.String.Single
'"'           Literal.String.Single
"'"           Literal.String.Single
')'           Punctuation
'\n'          Text.Whitespace

'Traceback (most recent call last):\n' Generic.Traceback

'  File '     Text
'"<stdin>"'   Name.Builtin
', line '     Text
'1'           Literal.Number
', in '       Text
'<module>'    Name
'\n'          Text.Whitespace

'  File '     Text
'"<string>"'  Name.Builtin
', line '     Text
'1'           Literal.Number
', in '       Text
'<module>'    Name
'\n'          Text.Whitespace

'    '        Text.Whitespace
'"'           Literal.String.Double
'\n'          Text.Whitespace

'     '       Text.Whitespace
'^'           Punctuation.Marker
'\n'          Text.Whitespace

'SyntaxError' Generic.Error
': '          Text
'EOL while scanning string literal' Name
'\n'          Text.Whitespace