Why won't this function work as expected? List exactly one reason.
1 2 3 4 5 6 7 8 9 10 11 12 13 | def make_op_with_history(config): how = config[0] args = config[1:] if how.split()[0] == 'dot_from_papers': return [(how, make_op(config))] if how.split()[0] in ['const_add', 'const_mul']: return [(how, make_op(config))] + make_op_with_history(config[1]) out = [] for arg in args: hist = make_op_with_history(arg) out.append(hist) return [(how, make_op(config))] + out |
Why won't this function work as expected? List exactly one reason.
1 2 3 4 5 6 7 8 9 10 11 12 13 | def make_op_with_history(config): how = config[0] args = config[1:] if how.split()[0] == 'dot_from_papers': return [(how, make_op(config))] if how.split()[0] in ['const_add', 'const_mul']: return [(how, make_op(config))] + make_op_with_history(config[1]) out = [] for arg in args: hist = make_op_with_history(arg) out.append(hist) return [(how, make_op(config))] + out |
The function `make_op_with_history` is recursive and it does not have a base case. This means that the function will continue to call itself indefinitely, resulting in a stack overflow error.
I asked a question about why some code was incorrect. The answer is "because because the code uses append instead of extend". Does this student answer say that? Giving multiple answers is okay as long as it also says somewhere that the code should replace the append with extend. The function `make_op_with_history` is recursive and it does not have a base case. This means that the function will continue to call itself indefinitely, resulting in a stack overflow error. Answer either 'The student passes' or 'The student fails'.
The student fails.
Testing if the previous output contains the string student passes
: False
Why won't this function work as expected? List exactly one reason.
1 2 3 4 5 6 7 8 9 10 11 12 13 | def make_op_with_history(config): how = config[0] args = config[1:] if how.split()[0] == 'dot_from_papers': return [(how, make_op(config))] if how.split()[0] in ['const_add', 'const_mul']: return [(how, make_op(config))] + make_op_with_history(config[1]) out = [] for arg in args: hist = make_op_with_history(arg) out.append(hist) return [(how, make_op(config))] + out |
Why won't this function work as expected? List exactly one reason.
1 2 3 4 5 6 7 8 9 10 11 12 13 | def make_op_with_history(config): how = config[0] args = config[1:] if how.split()[0] == 'dot_from_papers': return [(how, make_op(config))] if how.split()[0] in ['const_add', 'const_mul']: return [(how, make_op(config))] + make_op_with_history(config[1]) out = [] for arg in args: hist = make_op_with_history(arg) out.append(hist) return [(how, make_op(config))] + out |
The function can be fixed by replacing `out.append(hist)` with `out.extend(hist)`, because the former adds a list to the list `out`, while the latter adds the elements of the list `hist` to the list `out`.
I asked a question about why some code was incorrect. The answer is "because because the code uses append instead of extend". Does this student answer say that? Giving multiple answers is okay as long as it also says somewhere that the code should replace the append with extend. The function can be fixed by replacing `out.append(hist)` with `out.extend(hist)`, because the former adds a list to the list `out`, while the latter adds the elements of the list `hist` to the list `out`. Answer either 'The student passes' or 'The student fails'.
The student passes.
Testing if the previous output contains the string student passes
: True
Why won't this function work as expected? List exactly one reason.
1 2 3 4 5 6 7 8 9 10 11 12 13 | def make_op_with_history(config): how = config[0] args = config[1:] if how.split()[0] == 'dot_from_papers': return [(how, make_op(config))] if how.split()[0] in ['const_add', 'const_mul']: return [(how, make_op(config))] + make_op_with_history(config[1]) out = [] for arg in args: hist = make_op_with_history(arg) out.append(hist) return [(how, make_op(config))] + out |
Why won't this function work as expected? List exactly one reason.
1 2 3 4 5 6 7 8 9 10 11 12 13 | def make_op_with_history(config): how = config[0] args = config[1:] if how.split()[0] == 'dot_from_papers': return [(how, make_op(config))] if how.split()[0] in ['const_add', 'const_mul']: return [(how, make_op(config))] + make_op_with_history(config[1]) out = [] for arg in args: hist = make_op_with_history(arg) out.append(hist) return [(how, make_op(config))] + out |
The function recurses on `config[1]` in the second if statement, but should recurse on `arg` in the for loop.
I asked a question about why some code was incorrect. The answer is "because because the code uses append instead of extend". Does this student answer say that? Giving multiple answers is okay as long as it also says somewhere that the code should replace the append with extend. The function recurses on `config[1]` in the second if statement, but should recurse on `arg` in the for loop. Answer either 'The student passes' or 'The student fails'.
The student fails.
Testing if the previous output contains the string student passes
: False
Why won't this function work as expected? List exactly one reason.
1 2 3 4 5 6 7 8 9 10 11 12 13 | def make_op_with_history(config): how = config[0] args = config[1:] if how.split()[0] == 'dot_from_papers': return [(how, make_op(config))] if how.split()[0] in ['const_add', 'const_mul']: return [(how, make_op(config))] + make_op_with_history(config[1]) out = [] for arg in args: hist = make_op_with_history(arg) out.append(hist) return [(how, make_op(config))] + out |
Why won't this function work as expected? List exactly one reason.
1 2 3 4 5 6 7 8 9 10 11 12 13 | def make_op_with_history(config): how = config[0] args = config[1:] if how.split()[0] == 'dot_from_papers': return [(how, make_op(config))] if how.split()[0] in ['const_add', 'const_mul']: return [(how, make_op(config))] + make_op_with_history(config[1]) out = [] for arg in args: hist = make_op_with_history(arg) out.append(hist) return [(how, make_op(config))] + out |
The function is missing a return statement when `how` is not one of the expected values.
I asked a question about why some code was incorrect. The answer is "because because the code uses append instead of extend". Does this student answer say that? Giving multiple answers is okay as long as it also says somewhere that the code should replace the append with extend. The function is missing a return statement when `how` is not one of the expected values. Answer either 'The student passes' or 'The student fails'.
The student fails.
Testing if the previous output contains the string student passes
: False
Why won't this function work as expected? List exactly one reason.
1 2 3 4 5 6 7 8 9 10 11 12 13 | def make_op_with_history(config): how = config[0] args = config[1:] if how.split()[0] == 'dot_from_papers': return [(how, make_op(config))] if how.split()[0] in ['const_add', 'const_mul']: return [(how, make_op(config))] + make_op_with_history(config[1]) out = [] for arg in args: hist = make_op_with_history(arg) out.append(hist) return [(how, make_op(config))] + out |
Why won't this function work as expected? List exactly one reason.
1 2 3 4 5 6 7 8 9 10 11 12 13 | def make_op_with_history(config): how = config[0] args = config[1:] if how.split()[0] == 'dot_from_papers': return [(how, make_op(config))] if how.split()[0] in ['const_add', 'const_mul']: return [(how, make_op(config))] + make_op_with_history(config[1]) out = [] for arg in args: hist = make_op_with_history(arg) out.append(hist) return [(how, make_op(config))] + out |
The code will not work as expected because it always appends a tuple `(how, make_op(config))` to the returned list of tuples. If `how` is `'dot_from_papers'` or one of `'const_add', 'const_mul'`, then this behavior is correct. However, if `how` is something else, such as `'concat'`, then the tuple `(how, make_op(config))` should not be appended to the list.
I asked a question about why some code was incorrect. The answer is "because because the code uses append instead of extend". Does this student answer say that? Giving multiple answers is okay as long as it also says somewhere that the code should replace the append with extend. The code will not work as expected because it always appends a tuple `(how, make_op(config))` to the returned list of tuples. If `how` is `'dot_from_papers'` or one of `'const_add', 'const_mul'`, then this behavior is correct. However, if `how` is something else, such as `'concat'`, then the tuple `(how, make_op(config))` should not be appended to the list. Answer either 'The student passes' or 'The student fails'.
The student fails.
Testing if the previous output contains the string student passes
: False