Expression of type ExprTuple

from the theory of proveit.physics.quantum.circuits

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 ExprTuple, b
from proveit.logic import Set, SetOfAll
from proveit.numbers import one, zero
from proveit.physics.quantum.circuits import qubit_meas
from proveit.statistics import SampleSpaces

# build up the expression from sub-expressions
expr = ExprTuple(SetOfAll(instance_param_or_params = [b], instance_element = qubit_meas, domain = Set(zero, one)), SampleSpaces)

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\{\begin{array}{c} \Qcircuit@C=1em @R=.7em{
\qin{\lvert \psi \rangle} & \meter & \qout{\lvert b \rangle}
} \end{array}\right\}_{b \in \left\{0, 1\right\}}, \textrm{SampleSpaces}\right)

stored_expr.style_options()

name	description	default	current value	related methods
wrap_positions	position(s) at which wrapping is to occur; 'n' is after the nth comma.	()	()	('with_wrapping_at',)
justification	if any wrap positions are set, justify to the 'left', 'center', or 'right'	left	left	('with_justification',)

# display the expression information
stored_expr.expr_info()

	core type	sub-expressions	expression
0	ExprTuple	1, 2
1	Operation	operator: 3 operand: 5
2	Literal
3	Literal
4	ExprTuple	5
5	Lambda	parameter: 35 body: 6
6	Conditional	value: 7 condition: 8
7	Operation	operator: 9 operands: 10
8	Operation	operator: 11 operands: 12
9	Literal
10	ExprTuple	13, 14, 15
11	Literal
12	ExprTuple	35, 16
13	ExprTuple	17
14	ExprTuple	18
15	ExprTuple	19
16	Operation	operator: 20 operands: 21
17	Operation	operator: 22 operands: 23
18	Operation	operator: 24 operands: 25
19	Operation	operator: 26 operands: 27
20	Literal
21	ExprTuple	28, 29
22	Literal
23	NamedExprs	state: 30
24	Literal
25	NamedExprs	basis: 31
26	Literal
27	NamedExprs	state: 32
28	Literal
29	Literal
30	Variable
31	Literal
32	Operation	operator: 33 operand: 35
33	Literal
34	ExprTuple	35
35	Variable