Print all variables defined in one Jupyter cell

Question

Is there an easier way to display the name and the value of all variables defined in a single cell in a pretty way?

The way I'm doing now is like this, but I waste a lot of time when there are 30 variables or more:

Answer 1

You can use whos command to see all variables stored in the current kernel.

k, g, lx = .4, .8, 6.6
m = k*g*lx**2
whos

outputs:

Variable   Type     Data/Info
-----------------------------
g          float    0.8
k          float    0.4
lx         float    6.6
m          float    13.939200000000001

But as said, it displays all variables, so it will display other variables from earlier cells you've run.

A similar result can be achieved using locals() or globals() command from python built-in functions, which return a dictionary of variables. But the way jupyter represents is prettier.

---

Alternatively you can use InteractiveShell. This will change the behavior of cells and act like a python shell would, so it will output every called value (to output cell) once run.

from IPython.core.interactiveshell import InteractiveShell
InteractiveShell.ast_node_interactivity = "all"

k
g
... do stuff ...
lx
m
... do more stuff ...

outputs:

Out[2]: 0.4
Out[2]: 0.8
Out[2]: 6.6
Out[2]: 13.939200000000001

And finally you can return the interactivity to default by setting it to last_expr.

InteractiveShell.ast_node_interactivity = "last_expr"

---

But the way you do it is probably the easiest and prettiest way, you can just remove the assignment on dataframe to make it a one liner or you can make it more compact to call by:

k, g, lx, m

Out[3]: (0.4, 0.8, 6.6, 13.939200000000001)