Using the goto Statement in Python with the goto‑statement Package
This article explains the concept of the goto statement, why it is generally discouraged, and demonstrates how to install and use the third‑party goto‑statement package in Python to write loops and jumps with example code, while advising limited usage.
Developers familiar with C know the goto statement can jump arbitrarily between code locations, but many experienced programmers warn against its use because it can make program logic extremely confusing.
Sometimes goto can be handy—for example, to break out of deeply nested loops or to jump to a specific point in the code—yet overusing it makes the code behave like a chaotic quantum system that is hard to control.
The final piece of advice is simple: avoid goto whenever possible.
To use goto in Python, you first need to install a third‑party package because the language does not provide a built‑in goto statement:
pip install goto-statement
Below is the syntax and a concrete example showing how to define a function with the @with_goto decorator and use labels and goto statements to implement a range‑like loop:
<code>from goto import with_goto
@with_goto
def range(start, stop):
i = start
result = []
label .begin
if i == stop:
goto .end
result.append(i)
i += 1
goto .begin
label .end
return result
</code>Python Programming Learning Circle
A global community of Chinese Python developers offering technical articles, columns, original video tutorials, and problem sets. Topics include web full‑stack development, web scraping, data analysis, natural language processing, image processing, machine learning, automated testing, DevOps automation, and big data.
How this landed with the community
Was this worth your time?
0 Comments
Thoughtful readers leave field notes, pushback, and hard-won operational detail here.