When I attempt to run my Python script, I receive the following error:
IndentationError: unindent does not match any outer indentation level
Python uses indentation to group blocks of code. Top-level code in a Python script will start flush against the left margin, with each inner block being indented by an additional four spaces, per convention. If a block contains unevenly indented code (for example, two spaces before one line and four spaces before another), this confuses the interpreter and results in an IndentationError
exception. Therefore, it is important to ensure that all statements in each block are prefaced with the same number of spaces.
However, Python code that appears to be correctly indented can also produce IdentationError
exceptions. This usually arises from the use of both spaces and tabs for indentation, which Python disallows. The Python interpreter expects a single file to be indented with either spaces or tabs throughout, with spaces being officially preferred.
It should be possible to fix this error by replacing each tab with four spaces. This can be done automatically across whole files using the find-replace function in most text editors, or by using the following sed
command on a Unix-based system:
sed 's/\t/ /g' myscript.py
Get actionable, code-level insights to resolve Python performance bottlenecks and errors.
Create a free Sentry account
Create a Python project and note your DSN
Grab the Sentry Python SDK
pip install --upgrade sentry-sdk
import sentry_sdk sentry_sdk.init( "https://<key>@sentry.io/<project>", # Set traces_sample_rate to 1.0 to capture 100% # of transactions for performance monitoring. # We recommend adjusting this value in production. traces_sample_rate=1.0, )
Loved by over 4 million developers and more than 90,000 organizations worldwide, Sentry provides code-level observability to many of the world’s best-known companies like Disney, Peloton, Cloudflare, Eventbrite, Slack, Supercell, and Rockstar Games. Each month we process billions of exceptions from the most popular products on the internet.