45 lines
1.2 KiB
Org Mode
45 lines
1.2 KiB
Org Mode
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* Drills
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** Take a look at how you used range . Look up the range function to understand it.
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tldr, a "function" that generates a sequence of numbers:
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class range(start, stop[, step]):
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start
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The value of the start parameter (or 0 if the parameter was not supplied)
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stop
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The value of the stop parameter
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step
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The value of the step parameter (or 1 if the parameter was not supplied)
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-------
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I found it among python 3.8.3 built-in functions.
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but!
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Turns out it's not a function after all!
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It's an immutable sequence type.
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"a range object will always take the same (small) amount of memory" ... "as it only stores the start, stop and step values" and generates numbers on the fly
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note: similar in shell is: seq
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source: https://docs.python.org/3/library/stdtypes.html#range
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** Could you have avoided that for-loop entirely on line 22 and just assigned range(0,6) directly to elements?
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Do you mean line 21 book? (typo)
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Yes! Because range will generate a list that can be appended added as is.
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** Find the Python documentation on lists and read about them. What other operations can you do to lists besides append?
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extend, insert, remove, pop, clear, index, count, sort, reverse, copy
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fascinating! programming is cool! you can do so much with it
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