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Description
Functional Programming In PythonPython is not a functional programming language, but it is a multi paradigm language that makes functional programming easy to perform, and easy to mix with other programming styles. In this paper, David Mertz, a director of Python Software Foundation, examines the functional aspects of the language and points out which options work well and which ones you should generally decline. Mertz describes ways to avoid Pythons imperative style flow control,
Python is not a functional programming language, but it is a multi-paradigm language that makes functional programming easy to perform, and easy to mix with other programming styles. In this paper, David Mertz, a director of Python Software Foundation, examines the functional aspects of the language and points out which options work well and which ones you should generally decline.Mertz describes ways to avoid Python’s imperative-style flow control, the nuances of callable functions, how to work lazily with iterators, and the use of higher-order functions. He also lists several third-party Python libraries useful for functional programming.'-webkit-tap-highlight-color: transparent; color: rgb(102, 102, 102); font-family: "Open Sans"; font-size: 13px; margin-top: 0px; margin-bottom: 0px; padding: 6px 0px; background-color: rgb(255, 255, 255);'Topics include: Using encapsulation and other means to describe “what” a data collection consists of, rather than “how” to construct a data collection Creating callables with named functions, lambdas, closures, methods of classes, and multiple dispatch Using Python’s iterator protocol to accomplish the same effect as a lazy data structure Creating higher-order functions that take functions as arguments and/or produce a function as a result. David Mertz is a director of the PSF,and chair of its Trademarks Committee and Outreach & Education Committee. He wrote the columns Charming Python and XML Matters for IBM developerWorks and the Addison-Wesley book Text Processing in Python, has spoken at multiple OSCONs and PyCons, and was invited to be a keynote speaker at PyCon India, PyCon UK, PyCon ZA, and PyCon Belaru.Shipping Notes
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4.3 ★★★★★
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Product Reviews
★★★★★ 5
Skincare and Hair Care Experience with This Cyperus Rotundus Oil
This cyperus rotundus oil has a lightweight texture with good fluidity, it absorbs quickly when applied to the face, leaving no greasy or heavy feeling, even for combination-oily skin, I mainly use it for facial moisturizing and body care, after washing my face, I warm 2-3 drops in my palms and press it into my skin, and it doesn’t cause pilling when applying makeup afterward, leaving my skin soft and smooth, for hair care, after using it consistently for a month, the hair on my underarms and limbs has become finer, and the growth rate has slowed down significantly, so I don’t need to remove hair frequently, my skin also doesn’t get rough from frequent shaving, there’s no stinging or burning sensation during use, making it safe for sensitive skin, and the light aloe scent is fresh and pleasant, the dropper design is convenient, allowing precise dosage control to avoid waste, in addition to face and body, I also use it for scalp care, after washing my hair, I massage a few drops into my scalp, which relieves dryness and makes my hair smoother and shinier, overall, it delivers noticeable results for both skincare and hair care, with a comfortable user experience.
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Reviewed in the United States on April 10, 2026
★★★★★ 5
Absorbs into the skin well and no irritation so far
I bought this Cyperus Rotundus oil to try out, and the 1.85 oz bottle is a good size for me. The oil has a light botanical scent that is pleasant and not too strong. I have applied it a few times and found that it is very easy to use with the included dropper. It absorbs into the skin well and I have noticed no irritation at all, which is important for my daily routine.
The bottle arrived quickly and was packaged securely so there were no leaks. It is a practical addition to my shelf, and the glass container feels solid. This product does exactly what it says on the label and provides a straightforward way to use a natural oil. It is a functional and simple purchase that meets my needs perfectly.
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Reviewed in the United States on April 25, 2026
★★★★★ 5
Smooth skin without the post-shave itch
I’ve always had issues with my skin feeling super irritated after I shave my legs, so I started applying this Cyperus Rotundus oil right after hopping out of the shower. The quality of the blend is impressive—it’s got jojoba and almond oil too, so it feels very nourishing rather than just sitting on top of the skin. It absorbs quickly enough that I can put on my leggings and head to the gym without feeling like a greaseball.
The functionality as a hair inhibitor is a nice bonus. I’ve noticed the hair on my shins seems to be coming back a bit softer and less stubbly than before. For a 55 ml bottle, the value for money is solid since you only need a few drops to cover a large area. It’s a great find for anyone who deals with that annoying sandpaper feeling a day after waxing. My roommate even started using it on her arms because it’s fragrance-free and doesn't mess with her perfume.
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Reviewed in the United States on April 15, 2026
★★★★★ 5
Lightweight oil that fits into a simple routine
I started using this oil as part of my regular skincare routine, mainly applying it to areas like my arms and face after showering. The texture feels light and spreads easily without leaving a heavy residue. I noticed it absorbs fairly quickly, which makes it convenient for daily use. It also has a mild scent that is not overwhelming. I like that it includes plant based ingredients, and it leaves my skin feeling soft after application.
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Reviewed in the United States on April 30, 2026
★★★★★ 5
Good
Item form: Tablet
Good
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Reviewed in the United States on March 14, 2026