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, a, k
from proveit.numbers import Add, Interval, Sum, eight, nine, seven, 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(a, nine)), Add(Sum(index_or_indices = sub_expr1, summand = sub_expr2, domain = Interval(a, eight)), seven))

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 = a}^{9} \left(k - 2\right), \left(\sum_{k = a}^{8} \left(k - 2\right)\right) + 7\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: 9 operand: 5
2	Operation	operator: 20 operands: 4
3	ExprTuple	5
4	ExprTuple	6, 7
5	Lambda	parameter: 26 body: 8
6	Operation	operator: 9 operand: 12
7	Literal
8	Conditional	value: 17 condition: 11
9	Literal
10	ExprTuple	12
11	Operation	operator: 22 operands: 13
12	Lambda	parameter: 26 body: 15
13	ExprTuple	26, 16
14	ExprTuple	26
15	Conditional	value: 17 condition: 18
16	Operation	operator: 30 operands: 19
17	Operation	operator: 20 operands: 21
18	Operation	operator: 22 operands: 23
19	ExprTuple	33, 24
20	Literal
21	ExprTuple	26, 25
22	Literal
23	ExprTuple	26, 27
24	Literal
25	Operation	operator: 28 operand: 32
26	Variable
27	Operation	operator: 30 operands: 31
28	Literal
29	ExprTuple	32
30	Literal
31	ExprTuple	33, 34
32	Literal
33	Variable
34	Literal