ilfr.test_or
ilfr.test_and
css: decrease font of text
quiz.test: execute python scripts and check output
add >>> to some tasks of if_list_for_range
if_list_for_range: add test bool_expression (x3)
add test indentation_error
add test ilfr.nocolon_error
test ilfr.no_indentation_error
test: result matching doesn't depend on Error
test: function out_noneq compares results
test: check reverse tasks
fix ilfr.strip to pass tests
fix too long line
helpers: functions to work with lists
test ilfr.list_index
test ilfr.index_error
test: print if some of answers or task is nil
add test ilfr.append
test ilfr.fake_append