Tech Articles

How to Fix Syntax Errors in Python?

Last updated : March 25, 2026

Python is well-known for its straightforward syntax. Nevertheless, if you're studying Python for the very first time or have a good foundation in some other coding language, you might come across some situations that Python somehow doesn't solve.

If you've ever encountered a SyntaxError when attempting to execute your Python code, this article could assist you. Syntax errors are useful because they inform the compiler of the problem's root cause. So Python has already made the solution to your question simple. Apart from this, Geeksprogramming helps you to get the basics and then advanced learning easily.

Let's look at some of the most common causes of syntax errors.

1. Python's Invalid Syntax

When you compile your Python programs, the interpreter parses it to translate it to Python bytecode, after which it executes. During the decoding stage, the translator will detect any invalid syntax in Python. If the interpreter is unable to effectively interpret your Python program, this indicates that you have used invalid syntax anywhere in your software. The interpreter will try to display the location of the error.

Example

The following code has invalid syntax due to a missing colon.

# Incorrect
if x > 5
    print("Valid")

# Correct
x = 10
if x > 5:
    print("Valid")

2. Terms Reserved That Were Misspelled

The parser's warning message was "prin not defined." The parser is unsure where this word resides since it isn't proclaimed as a built-in or user-defined keyword.

Example

Here, the keyword print is misspelled.

# Incorrect
prin("Hello")

# Correct
print("Hello")

3. Exception and Reverse

Whenever the compiler encounters an invalid syntax in a Python program, it throws a SyntaxError exception and displays a traceback including some beneficial data to assist you in debugging the error.

Example

The following code produces a SyntaxError due to a missing parenthesis.

# Incorrect
print("Hello"

# Correct
print("Hello")

4. Needed Spaces are Absent

Python, with exception of other coding languages, requires an indented block. This is why so many coders struggle to grasp this idea in its initial stages.

Example

The following code fails due to missing indentation.

# Incorrect
if True:
print("Hi")

# Correct
if True:
    print("Hi")

5. Basic Syntax Errors

When you meet a SyntaxError for the very first time, it's useful to understand what caused the failure and what you should do to correct the invalid syntax in the Python program. In the subsections that follow, you'll learn about a few of the most likely causes of SyntaxErrors and ways to fix them.

Misapplication of the (=) Operator
There are numerous situations in Python in which you cannot assign objects. Assigning function calls are one example. Your intention is most likely not to give a value to a function call. This can happen if you accidentally drop out the additional equals sign (=), which turns the assigned task into a comparison.
```
# Incorrect
if x = 10:
    print("Equal")

# Correct
x = 10
if x == 10:
    print("Equal")
```
Typing error, unavailable, or misapplication of Python Keywords
Python keywords are a collection of secured words in Python which have a special definition. These are words that you cannot use in your code as identifiers, variables, or function titles. They are built into the language and should just be utilized in the contexts that Python supports.
```
# Incorrect
for = 10

# Correct
num = 10
print(num)
```
Parentheses and quotations are missing
A missing or misaligned closure parenthesis or quote is frequently the source of invalid syntax in Python script. These could indeed be difficult to identify in long codes line of layered brackets or multi-line blocks. Python's tracebacks could really help you find misaligned or lacking quotes.
```
# Incorrect
print("Hello)

# Correct
print("Hello")
```
Dictionary Syntax Error
This kind of situation is frequent when Python syntax is mixed up with that of various software languages. This is also visible if you mix up the procedure of determining a dictionary with a dict() instruction. You may fix this by replacing the equals sign with a colon. You may also use dict() instead.
```
# Incorrect
data = {"name" = "John"}

# Correct
data = {"name": "John"}
print(data["name"])
```

6. Incorrectly Using Indentation

SyntaxError has 2 subsets that deal especially with indentation problems:

IndentationError
TabError

Many coding languages use curly brackets to symbolize code blocks, so although Python uses whitespace. Python anticipates that the whitespace in one's script will behave predictably. If a line in a program has an insufficient amount of space, an IndentationError is thrown.

The TabError is another type of SyntaxError that appears when a line includes either a tab or a space for indentation, while the remaining document includes the other. This may go unnoticed until Python highlight it to you!

Example

Mixing tabs and spaces causes errors.

# Incorrect
if True:
	print("Hello")
    print("World")

# Correct
if True:
    print("Hello")
    print("World")

7. The function which Defines and Calls

While creating or invoking functions in Python, you may encounter erroneous syntax. If you put a semicolon rather than a colon at the conclusion of a function declaration, for instance, you will get a SyntaxError. The traceback in this case is really useful, with the caret referring directly to the problematic character. In Python, you may correct this error by replacing the semicolon with a colon.

Example

Using a semicolon instead of colon causes syntax error.

# Incorrect
def greet();
    print("Hi")

# Correct
def greet():
    print("Hi")

greet()

More Examples to Fix Python Syntax Errors

Below are some common syntax errors in Python along with their correct versions. Understanding these errors will help you write clean and error-free Python code.

Example 1: Missing Colon in if Statement

In Python, a colon (:) is required at the end of control statements like if, for, and while. Missing it will result in a syntax error.

# Incorrect
if x > 10
    print("Greater than 10")

# Correct
x = 15
if x > 10:
    print("Greater than 10")