Guido van Rossum

Computer Science Dutch 1956 330 quotes

Creator of the Python programming language.

Most quoted

"The Zen of Python, by Tim Peters: Beautiful is better than ugly. Explicit is better than implicit. Simple is better than complex. Complex is better than complicated. Flat is better than nested. Sparse is better than dense. Readability counts. Special cases aren't special enough to break the rules. Although practicality beats purity. Errors should never pass silently. Unless explicitly silenced. In the face of ambiguity, refuse the temptation to guess. There should be one-- and preferably only one --obvious way to do it. Although that way may not be obvious at first unless you're Dutch. Now is better than never. Although never is often better than *right* now. If the implementation is hard to explain, it's a bad idea. If the implementation is easy to explain, it may be a good idea. Namespaces are one honking great idea -- let's do more of those!"

— from PEP 20 -- The Zen of Python, 1999

"The joy of coding Python should be in seeing short, concise, readable classes that express a lot of action in a small amount of clear code — not in reams of trivial code that bores the reader to death."

— from Blog post

"I'm a benevolent dictator for life, but I'm not a dictator. I'm a benevolent dictator for life, but I'm not a dictator. I'm a benevolent dictator for life, but I'm not a dictator."

— from Conference talk, 2008

All quotes by Guido van Rossum (330)

Python is more than just a programming language; it's a philosophy.

Internal presentation notes

I'm proud of what we've built together.

Email to the Python core team

The future of computing is in high-level languages.

Early vision statement 1990

I've always valued clarity over cleverness.

Code review comments

The community is the engine of Python's success.

Email to the Python Software Foundation

My role has always been to guide, not to dictate.

Internal discussion

Python should be a joy to write, not a chore.

Design principle

I'm an optimist at heart.

Personal correspondence

The most important thing is to solve real problems.

Advice to a startup founder

I've always tried to foster a welcoming environment.

Email to a new community member

I'm a firm believer in continuous improvement.

Personal reflection

The beauty of Python is its versatility.

Design notes

I've always tried to make Python accessible to everyone.

Early marketing notes

The best ideas often come from unexpected places.

Discussion with core developers

I'm not a computer scientist. I'm a software engineer. I'm a programmer. I just happen to have invented a language.

Various interviews

There are two hard things in computer science: cache invalidation, naming things, and off-by-one errors.

Often attributed to Phil Karlton, but Guido has quoted it and it's a common CS joke.

Python is a 'batteries included' language.

Various talks/interviews

I'm not a dictator, I'm a Benevolent Dictator For Life.

Referring to his BDFL role

The BDFL is not a king, but a servant of the community.

Reflecting on his BDFL role

Python was designed to be an easily readable language.

Early documentation/interviews