Expression of type ExprTuple

from the theory of proveit.statistics

import proveit
# Automation is not needed when building an expression:
proveit.defaults.automation = False # This will speed things up.
proveit.defaults.inline_pngs = False # Makes files smaller.
%load_expr # Load the stored expression as 'stored_expr'
# import Expression classes needed to build the expression
from proveit import Conditional, ExprTuple, Lambda, Qx, X, fx, x
from proveit.logic import And, InSet
from proveit.statistics import Prob

# build up the expression from sub-expressions
expr = ExprTuple(Lambda(x, Conditional(Prob(fx), And(InSet(x, X), Qx))))

expr:

# check that the built expression is the same as the stored expression
assert expr == stored_expr
assert expr._style_id == stored_expr._style_id
print("Passed sanity check: expr matches stored_expr")

Passed sanity check: expr matches stored_expr

# Show the LaTeX representation of the expression for convenience if you need it.
print(stored_expr.latex())

\left(x \mapsto \left\{\textrm{Pr}\left(f\left(x\right)\right) \textrm{ if } x \in X ,  Q\left(x\right)\right..\right)

stored_expr.style_options()

no style options

# display the expression information
stored_expr.expr_info()

	core type	sub-expressions	expression
0	ExprTuple	1
1	Lambda	parameter: 18 body: 2
2	Conditional	value: 3 condition: 4
3	Operation	operator: 5 operand: 9
4	Operation	operator: 7 operands: 8
5	Literal
6	ExprTuple	9
7	Literal
8	ExprTuple	10, 11
9	Operation	operator: 12 operand: 18
10	Operation	operator: 13 operands: 14
11	Operation	operator: 15 operand: 18
12	Variable
13	Literal
14	ExprTuple	18, 17
15	Variable
16	ExprTuple	18
17	Variable
18	Variable