7. Time Saving Tips & Tricks#

7.1. Commenting out multiple lines of code#

To comment out multiple lines of code:

  1. Highlight the lines you want to comment

  2. press CTRL+/

To uncomment, just repeat the above.

7.2. Switching values between two (or multiple) variables#

Rather than doing something like:

a,b=4,6
print(f' a = {a} and b = {b}')
t=a
a=b
b=t
print(f' a = {a} and b = {b}')

 a = 4 and b = 6
 a = 6 and b = 4

you can do this:

a,b=4,6
print(f' a = {a} and b = {b}')
a,b = b,a  # you can assign multiple values at once with python
print(f' a = {a} and b = {b}')

 a = 4 and b = 6
 a = 6 and b = 4

The previous is not only shorter but it is much easier to read and understand.

7.3. Greek Letters:#

Within a markdown cells, type $\mu$ to get \(\mu\). Use LaTeX code between the dollar signs. There are LaTeX helper apps online that will give you the LaTeX code for an equation that you create with a graphical interface. Double dollar signs $$\mu=\sqrt{\psi}$$ will place the equation on its own line.

\[\mu=\sqrt{\psi} \]

For code cells, type \sigma (no dollar signs) and then press the tab key.