Expression of type ExprTuple

from the theory of proveit.core_expr_types.tuples

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, n, x, y
from proveit.numbers import Add, one, subtract, zero

# build up the expression from sub-expressions
sub_expr1 = Variable("_a", latex_format = r"{_{-}a}")
expr = ExprTuple(ExprRange(sub_expr1, IndexedVar(x, Add(sub_expr1, one)), zero, subtract(n, one)), y)

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(x_{0 + 1}, x_{1 + 1}, \ldots, x_{\left(n - 1\right) + 1}, y\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	ExprRange	lambda_map: 3 start_index: 4 end_index: 5
2	Variable
3	Lambda	parameter: 18 body: 7
4	Literal
5	Operation	operator: 16 operands: 8
6	ExprTuple	18
7	IndexedVar	variable: 9 index: 13
8	ExprTuple	11, 12
9	Variable
10	ExprTuple	13
11	Variable
12	Operation	operator: 14 operand: 19
13	Operation	operator: 16 operands: 17
14	Literal
15	ExprTuple	19
16	Literal
17	ExprTuple	18, 19
18	Variable
19	Literal