Expression of type ExprTuple

from the theory of proveit.numbers.addition

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, c, n
from proveit.core_expr_types import a_1_to_n
from proveit.numbers import Neg, one, subtract, two

# build up the expression from sub-expressions
sub_expr1 = Variable("_a", latex_format = r"{_{-}a}")
expr = ExprTuple(a_1_to_n, b, Neg(c), ExprRange(sub_expr1, IndexedVar(a, sub_expr1), one, subtract(n, 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(a_{1}, a_{2}, \ldots, a_{n}, b, -c,a_{1}, a_{2}, \ldots, a_{n - 2}\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, 3, 4
1	ExprRange	lambda_map: 6 start_index: 7 end_index: 15
2	Variable
3	Operation	operator: 18 operand: 9
4	ExprRange	lambda_map: 6 start_index: 7 end_index: 8
5	ExprTuple	9
6	Lambda	parameter: 17 body: 10
7	Literal
8	Operation	operator: 11 operands: 12
9	Variable
10	IndexedVar	variable: 13 index: 17
11	Literal
12	ExprTuple	15, 16
13	Variable
14	ExprTuple	17
15	Variable
16	Operation	operator: 18 operand: 20
17	Variable
18	Literal
19	ExprTuple	20
20	Literal