python - 为什么在 Udacity 中没有显示输出，尽管代码在 Jupiter 笔记本中有效？

Question

当试图通过仅更改输入来解决 Udacity 中的任务时，代码不想显示任何输出。我试图编辑代码并单击测试运行，但它没有显示任何内容；它只显示“您的代码没有显示输出”。我将代码复制到 Jupiter 笔记本上，它就可以工作了。

代码

import pandas as pd

# TODO: Set weight1, weight2, and bias
weight1 = 1
weight2 = 1
bias = 0.5


# DON'T CHANGE ANYTHING BELOW
# Inputs and outputs
test_inputs = [(0, 0), (0, 1), (1, 0), (1, 1)]
correct_outputs = [False, False, False, True]
outputs = []

# Generate and check output
for test_input, correct_output in zip(test_inputs, correct_outputs):
    linear_combination = weight1 * test_input[0] + weight2 * test_input[1] + bias
    output = int(linear_combination >= 0)
    is_correct_string = 'Yes' if output == correct_output else 'No'
    outputs.append([test_input[0], test_input[1], linear_combination, output, is_correct_string])

# Print output
num_wrong = len([output[4] for output in outputs if output[4] == 'No'])
output_frame = pd.DataFrame(outputs, columns=['Input 1', '  Input 2', '  Linear Combination', '  Activation Output', '  Is Correct'])
if not num_wrong:
    print('Nice!  You got it all correct.\n')
else:
    print('You got {} wrong.  Keep trying!\n'.format(num_wrong))
print(output_frame.to_string(index=False))

标签： pythonpandasmachine-learningdeep-learningoutput