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, Variable
from proveit.core_expr_types import Len
from proveit.numbers import DecimalSequence, eight, five, four, nine, one, seven, six, three, two

# build up the expression from sub-expressions
expr = ExprTuple(Len(operands = [three, eight, six, seven, four, ExprRange(Variable("_a", latex_format = r"{_{-}a}"), nine, one, four), five, seven, two]), DecimalSequence(one, two))

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(3, 8, 6, 7, 4,9, 9, ..1 \times.., 9, 5, 7, 2\right)|, 12\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 operands: 4
2	Operation	operator: 5 operands: 6
3	Literal
4	ExprTuple	7, 8, 9, 12, 16, 10, 11, 12, 13
5	Literal
6	ExprTuple	15, 13
7	Literal
8	Literal
9	Literal
10	ExprRange	lambda_map: 14 start_index: 15 end_index: 16
11	Literal
12	Literal
13	Literal
14	Lambda	parameter: 19 body: 18
15	Literal
16	Literal
17	ExprTuple	19
18	Literal
19	Variable