Learn to code in python

Hello,

I advise you to look for a Python course to understand the basics.

Hello,

A forum is not the ideal medium for the complete learning of a language, as one basic question leads to another, whereas comprehensive and progressive courses exist, particularly on Python.

See:

https://www.python-lycee.com/parcours-apprentissage

https://www.irif.fr/~sangnier/enseignement/16-17/Ip1-Python/IP1-Python-cours-td-1-4.pdf

https://python.sdv.u-paris.fr/cours-python.pdf

Hello,

The question you’re asking is a basic one, so I can only advise you to quickly look through a Python course, perhaps this one.

I also strongly recommend that you read this before asking for help with an exercise. It would be good to show what you have started to do and explain what is blocking you.

Now, back to your question. A program is a sequence of instructions. You probably know that you can write a message using the print function. Here’s a very simple Python program:

print("Multiplication Table")

Let’s now see how to display a string that depends on two multiples (let’s say a and b). There are several syntaxes in Python:

• The simplest:

a = 2 b = 3 print(a, " * ", b, " = ", a * b)

• The f-strings:

a = 2 b = 3 print(f"{a} * {b} = {a * b}")

Both are perfectly valid; you can choose whichever you want.

Now, let’s see how to create a loop. In the case of multiplication tables, the number of iterations is known before entering the loop, so a for loop is more appropriate than a while loop. The advantage of a for loop is that, by design and thanks to certain constraints imposed by Python, it usually prevents you from accidentally creating an infinite loop (unlike while loops). A for loop allows you to update a variable by iterating over an iterable, for example, a sequence of values (called range in Python). In Python:

• range(n) means counting from 0 inclusive to n exclusive, with a step of 1
• range(n0, n) means counting from n0 inclusive to n exclusive, with a step of 1 (make sure n0 <= n)
• range(n1, n2, s) means counting from n1 to n2 exclusive, with a step of s (make sure s is non-zero and that n1 < n2 if s > 0 or that n1 > n2 if s < 0).

Here we want to count from 1 inclusive to 10 exclusive, so what we need is range(1, 10) (which can also be written as range(1, 10, 1)). Here’s a program that displays these values:

for a in range(1, 10): print("a =", a)

... or:

for a in range(1, 10): print(f"a = {a}")

Let’s call this variable a. Then you need to multiply a by b, where b is the multiple considered in the table.

You now have all the elements to finish your exercise.

Good luck!

Are we talking about data structures or program structures?

Hello

https://www.w3schools.com/python/default.asp

Hello,

There is also a tutorial on the Python website and in French.

https://docs.python.org/fr/3/tutorial/index.html

Hello everyone,

@everyone: If you want to suggest references, please do so in the other discussion thread rather than the one 17159642 opened.

17159642

• I think the message #1 sufficiently addresses the initial problem, but if it's not clear enough, don’t hesitate to ask for clarification.
• Please make sure to stick to this initial question. If you have other questions, start a new discussion (avoid starting new discussion topics as you have done in #3, #14 unless, of course, they are directly related to the discussion).
• I also encourage you to get into the habit of searching for answers yourself before asking questions. Not that we don’t want to answer you, but it’s an exercise we regularly face when developing, so it’s best to get into the habit right from the start.

Happy coding!

I don't program in Python, but as for the while and for instructions, I think it's pretty much the same as in other languages!?

"while" repeat the action as long as the condition is true

"for" as long as the condition is not met, we continue the loop...