Expression of type ExprTuple

from the theory of proveit.numbers.summation

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, k
from proveit.numbers import Add, Interval, Sum, eight, nine, one, subtract, two

# build up the expression from sub-expressions
sub_expr1 = [k]
sub_expr2 = subtract(k, two)
expr = ExprTuple(Sum(index_or_indices = sub_expr1, summand = sub_expr2, domain = Interval(Add(eight, one), nine)), Sum(index_or_indices = sub_expr1, summand = sub_expr2, domain = Interval(nine, nine)))

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(\sum_{k = 8 + 1}^{9} \left(k - 2\right), \sum_{k = 9}^{9} \left(k - 2\right)\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: 4 operand: 6
2	Operation	operator: 4 operand: 7
3	ExprTuple	6
4	Literal
5	ExprTuple	7
6	Lambda	parameter: 20 body: 8
7	Lambda	parameter: 20 body: 10
8	Conditional	value: 12 condition: 11
9	ExprTuple	20
10	Conditional	value: 12 condition: 13
11	Operation	operator: 16 operands: 14
12	Operation	operator: 30 operands: 15
13	Operation	operator: 16 operands: 17
14	ExprTuple	20, 18
15	ExprTuple	20, 19
16	Literal
17	ExprTuple	20, 21
18	Operation	operator: 25 operands: 22
19	Operation	operator: 23 operand: 28
20	Variable
21	Operation	operator: 25 operands: 26
22	ExprTuple	27, 29
23	Literal
24	ExprTuple	28
25	Literal
26	ExprTuple	29, 29
27	Operation	operator: 30 operands: 31
28	Literal
29	Literal
30	Literal
31	ExprTuple	32, 33
32	Literal
33	Literal