Blog |

How to Fix Invalid SyntaxError in Python

How to Fix Invalid SyntaxError in Python
Table of Contents

The Python SyntaxError occurs when the interpreter encounters invalid syntax in code. When Python code is executed, the interpreter parses it to convert it into bytecode. If the interpreter finds any invalid syntax during the parsing stage, a SyntaxError is thrown.

What Causes Invalid SyntaxError

Some of the most common causes of syntax errors in Python are:

  • Misspelled reserved keywords
  • Missing quotes
  • Missing required spaces
  • Missing operators
  • Invalid usage of blocks (e.g. if-else, loops)
  • Invalid variable declarations
  • Invalid function definitions or calls

Python Invalid SyntaxError Example

Here’s an example of a Python SyntaxError thrown due to missing quotes:

print(Hello World)

In the above example, since the string “Hello World” is attempted to be printed without using quotes, a SyntaxError is thrown:

File "test.py", line 1

    print(Hello World)

                ^

SyntaxError: invalid syntax

How to Fix Invalid SyntaxError in Python

To avoid syntax errors, IDEs that understand Python syntax can be used as they highlight the lines containing the problem. These issues can then be fixed before code is executed.

If a SyntaxError occurs after execution, the traceback can be inspected to detect where the issue exists in code

The traceback from the earlier example can be inspected to fix the issue:

File "test.py", line 1

    print(Hello World)

                ^

SyntaxError: invalid syntax

Here, it can be seen that the issue exists in line 1. When this line is inspected, it should be clear that the error occurred because of missing quotes in the string. When these missing quotes are added, the syntax issue is fixed:

print("Hello World")

The above code runs successfully and produces the correct output as expected:


Hello World

Track, Analyze and Manage Errors With Rollbar

Managing errors and exceptions in your code is challenging. It can make deploying production code an unnerving experience. Being able to track, analyze, and manage errors in real-time can help you to proceed with more confidence. Rollbar automates error monitoring and triaging, making fixing Python errors easier than ever. Try it today!

Related Posts

See all posts

"Rollbar allows us to go from alerting to impact analysis and resolution in a matter of minutes. Without it we would be flying blind."

Start continuously improving your code today.

Get Started Shape