Are there concepts ingrained by 30 years of using Pyhon in my brain which I need to throw away and get rid of because they will lead to issues with understanding how to read and write Julia code (except zero-based indexing, which I didn’t get friend of after 30 years of using it)? By the way: such …

The updated doc is here: Noteworthy Differences from other Languages · The Julia Language Julia’s range indexing has the format of x[start:step:stop], whereas Python’s format is x[start:(stop+1):step]. Hence, x[0:10:2] in Python is equivalent to x[1:2:10] in Julia. Similarly, x[::-1] in Python, wh…

I’ve changed my language to be more clearly non-judgmental. The point is that files and modules exist in both languages but behave quite differently in how they’re imported and used. Of course whichever model you prefer will be a preference. The challenge (or “harm”) to learning is simply that th…

One difference that can trip up Python users new to Julia is the scoping rules. In Python, the first x = 2 in a function defines a new x unless explicitly specified nonlocal. In [4]: def f(): ...: x = 1 ...: def g(): ...: x = 2 ...: g() ...: return x ...: …

Yeah, absolutely. I love the chain syntax! But I wanted to highlight the differences between broadcasting and list comprehension without adding another syntax :slight_smile:

There are for sure concepts that are harmful to the sanity of own thoughts. If I mean 1 to 10 , I mean [1, 2, … , 9, 10] and not [1, 2, … 8, 9]. It is also sure that it is possible to adapt to any pattern keeping clear and sane mind, but some of such patterns are result of author’s confusion, so if …

This seems to go well along with my inner language and thought model … classes and inheritance were from my perspective always more confusing than helpful. The entire OOP concept resulted overall in the mainstream in code polluted with unnecessary encapsulations often also for a single line of code …

[image] mbauman: I’m struggling to think of actively harmful confusing concepts in Python — most core concepts are directly transferable. The performance model in Python (“loops / user code = slow; vectorized / built-in = fast”) can be misleading if you confuse it for a model of how the compu…

dir… Thank you. I remember now.

methodswith is a good start… thank you… :slightly_smiling_face: But one thing I find confusing with Julia is how verbose it is in its answers… If I type methodswith(DataFrame) , I have pages of information in the REPL. It would be nice if it was more concise or if it is allowed me to hit the space…

[image] Chriz_Zend: It would be nice if it was more concise or if it is allowed me to hit the space bar to go to the next page TerminalPager.jl enables spacebar to move pages. using DataFrames, TerminalPager methodswith(DataFrame) |> pager

Many highly respected educators focus on mental models. Here’s one great example: Notes on Teaching Python – Mental Models | Learn Python Notes on Teaching Python – Mental Models I admit it – I’m just an old, cranky teacher. As much I love seeing so many people all around me …

Which concepts known from Python programming are useful in understanding Julia and which are not?

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Which concepts known from Python programming are useful in understanding Julia and which are not?

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