1.2.1.7-pcep-30-02-practice-test-compendium-variables-assignments-comments.md

1.2.1.7 PCEP-30-02 Practice Test Compendium – Variables, assignments, comments

Compound operators

Compound Arithmetic Operators

Operator	Meaning	Example
variable += expression	variable = variable + (expression)	counter += 1
variable -= expression	variable = variable - (expression)	due -= ret
variable *= expression	variable = variable * (expression)	next_power *= next_power
variable /= expression	variable = variable / (expression)	fraction /= fraction
variable //= expression	variable = variable // (expression)	always_one //= always_one
variable %= expression	variable = variable % (expression)	always_zero %= 1
variable **= expression	variable = variable ** (expression)	square_me **= 2

Compound String Operators

Operator	Meaning	Example
variable += expression	variable = variable + (expression)	header += '****'
variable *= expression	variable = variable * (expression)	doubled *= 2

Note: Boolean operators have no short-cut variants.

Comments

01) A part of the code line which starts with hash (#), which is not a part of a string literal, is considered a comment (a part of the code which is ignored by the interpreter)

For example, these two lines contain comments:

# This is a line which is completely ignored by the Python interpreter.
result = True # only part of this line is a comment