Scientific notation in list form in Python

Question

I have a list A. I want to convert the elements of this list to scientific notation. I present the current and expected output.

A = [0.000129,0.000148]
A_scientific = [f'{num:.2e}' for num in A]
print(A_scientific)

The current output is

['1.29e-04', '1.48e-04']

The expected output is

[1.29e-04, 1.48e-04]

Answer 1

You could use a str.join() within an f-string like this:

A = [0.000129,0.000148]
A_scientific = [f'{num:.2e}' for num in A]
print(f"[{', '.join(A_scientific)}]")

...or by concatenation...

print("[" + ", ".join(A_scientific) + "]")

Output:

[1.29e-04, 1.48e-04]