Expression of type ExprTuple

from the theory of proveit.core_expr_types.conditionals

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 A, Conditional, ExprTuple, Lambda, Q
from proveit.logic import Implies

# build up the expression from sub-expressions
expr = ExprTuple(Lambda([A, Q], Conditional(Implies(Q, A), Conditional(A, Q))))

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(\left(A, Q\right) \mapsto \left\{Q \Rightarrow A \textrm{ if } \left\{A \textrm{ if } Q\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	parameters: 2 body: 3
2	ExprTuple	9, 8
3	Conditional	value: 4 condition: 5
4	Operation	operator: 6 operands: 7
5	Conditional	value: 9 condition: 8
6	Literal
7	ExprTuple	8, 9
8	Variable
9	Variable