python-snippets | Chunks of Python | Wrapper library

Note: the following answer assumes you are on the correct version (3.6+), if not: simply, variable annotation isn't supported on your current version of Python.

The problem may seem like the type annotation is causing the SyntaxError, but another very plausible possibility is that there is an unclosed parenthesis or a unclosed something in the lines preceding. Since in the docs, it said:

The parser repeats the offending line and displays a little ‘arrow’ pointing at the earliest point in the line where the error was detected. The error is caused by (or at least detected at) the token preceding the arrow

(emphasis mine)

The parser can only detect an unclosed bracket when a token that is invalid in that context is given. Since brackets and parenthesis can carry through multiple lines (which means EOL wouldn't be raised), and text is a valid variable identifier, which leaves only that colons aren't allowed in brackets or parentheses (excepted when it's used as an parameter, which also accepts type annotation).

Here's an reproducible example of your code hosted on tio.run (the SE code-golf compiler):

https://tio.run/##K6gsycjPM/7/X4OrJLWixEqhuKRIwVZBXf3/fwA

Is python-snippets/pyspark.py your file? If yes the you should not use the name pyspark.py as it will conflict with the original pyspark package.

Please rename the file to something else and it should work