How do I write a python function isExponentialFloat$()$ that returns true if a number is in correct exponential format i$.$e$.2\mathrm{.}4$e$3,-3\mathrm{.}21$e$2$ or $-12\mathrm{.}33$e$-3$ and and returns false for any other format.

Need to use both of these in determining if a $=...$

$1.$

isDigPeriod$()$ to determine if number has digits and periods only... followed by

a $=$ isInt$("$$$3")$

resulting in a getting a false

$2.$

isInt$()$ to determine if number is an intereg with $($can include negative, zero or poositive$)$

a $=$ isInt$("-58")$

resulting in a getting a true

FOLLOWED BY$...$

a $=\text{'}3\mathrm{.}7$e$5\text{'}$

If true for both prints "This number is an ExponentialFloat" or if either or both are false prints "This number is not an ExponentialFloat".