一行代码告别 Debug 和 Print，PySnooper 助你提升算法学习效率

2023-12-31 09:08:38

PySnooper 助力算法学习

在算法学习中，debug 和 print 是必不可少的调试手段，但它们往往会让代码变得冗长且难以维护。pysnooper 模块可以让你在运行代码的同时打印出变量值，从而简化调试过程，提升学习效率。

一行代码搞定

只需在代码中添加一行代码，pysnooper 就能自动为你打印出变量值。例如，在以下代码中，我们使用 pysnooper 来调试一个简单的算法：

import pysnooper

@pysnooper.snoop()
def calculate_sum(numbers):
  """Calculates the sum of a list of numbers.

  Args:
    numbers: A list of numbers.

  Returns:
    The sum of the numbers in the list.
  """

  total = 0
  for number in numbers:
    total += number

  return total

if __name__ == "__main__":
  numbers = [1, 2, 3, 4, 5]
  result = calculate_sum(numbers)
  print(result)

运行这段代码后，pysnooper 会在终端中打印出变量值，如下所示：

[pysnooper] calculate_sum(numbers=[1, 2, 3, 4, 5])
[pysnooper] total = 0
[pysnooper] number = 1
[pysnooper] total += number
[pysnooper] total = 1
[pysnooper] number = 2
[pysnooper] total += number
[pysnooper] total = 3
[pysnooper] number = 3
[pysnooper] total += number
[pysnooper] total = 6
[pysnooper] number = 4
[pysnooper] total += number
[pysnooper] total = 10
[pysnooper] number = 5
[pysnooper] total += number
[pysnooper] total = 15
[pysnooper] return total
[pysnooper] result = 15
[pysnooper] print(result)
15