Expression of type ExprTuple

from the theory of proveit.numbers.numerals.decimals

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 ExprRange, ExprTuple, IndexedVar, Variable, a, b, k, m
from proveit.numbers import Add, DecimalSequence, nine, one, zero

# build up the expression from sub-expressions
sub_expr1 = Variable("_a", latex_format = r"{_{-}a}")
sub_expr2 = ExprRange(sub_expr1, IndexedVar(a, sub_expr1), one, m)
expr = ExprTuple(Add(DecimalSequence(sub_expr2, b, ExprRange(sub_expr1, nine, one, k)), one), DecimalSequence(sub_expr2, Add(b, one), ExprRange(sub_expr1, zero, one, k)))

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(\texttt{\#}(a_{1}, a_{2}, \ldots, a_{m} ~ b ~ 9, 9, ..\left(k - 3\right) \times.., 9) + 1, \texttt{\#}(a_{1}, a_{2}, \ldots, a_{m} ~ \left(b + 1\right) ~ 0, 0, ..\left(k - 3\right) \times.., 0)\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: 10 operands: 3
2	Operation	operator: 8 operands: 4
3	ExprTuple	5, 20
4	ExprTuple	13, 6, 7
5	Operation	operator: 8 operands: 9
6	Operation	operator: 10 operands: 11
7	ExprRange	lambda_map: 12 start_index: 20 end_index: 21
8	Literal
9	ExprTuple	13, 15, 14
10	Literal
11	ExprTuple	15, 20
12	Lambda	parameter: 26 body: 16
13	ExprRange	lambda_map: 17 start_index: 20 end_index: 18
14	ExprRange	lambda_map: 19 start_index: 20 end_index: 21
15	Variable
16	Literal
17	Lambda	parameter: 26 body: 22
18	Variable
19	Lambda	parameter: 26 body: 23
20	Literal
21	Variable
22	IndexedVar	variable: 24 index: 26
23	Literal
24	Variable
25	ExprTuple	26
26	Variable