python - 我如何使用迭代来提高效率？

Question

我是 python 的新手，我知道我可以使用迭代(例如 for 循环)使下面的代码更简洁，我只是不知道该怎么做

这是我目前的情况

# Open file for reading
dataFileRead = open(filename, "r")

# Read file content into a list - to be completed - Part 1

SampleData = [line.rstrip('\n') for line in open(filename)]
print(SampleData)

variables = [mazeWidth, mazeHeight, aNumOfTreasures, aNumOfBombs, emptyCell, treasure, bomb, exitGate, boundary, boundarySide]
mazeWidth = SampleData[0]
mazeHeight = SampleData[1]
aNumOfTreasures = SampleData[2]
aNumOfBombs = SampleData[3]
emptyCell = SampleData[4]
treasure = SampleData[5]
bomb = SampleData[6]
mario = SampleData[7]
exitGate = SampleData[8]
boundary = SampleData[9]
boundarySide = SampleData[10]

任何输入都有帮助!谢谢

Answer 1

您可以使用字典来保存变量的名称和值，而不是使用单独的变量:

variable_names = ['mazeWidth', 'mazeHeight', 'aNumOfTreasures', 'aNumOfBombs', 'emptyCell', 'treasure', 'bomb', 'exitGate', 'boundary', 'boundarySide']

variables = {
  name: SampleData[i] for i, name in enumerate(variable_names)
}

以后，如果你想要变量exitGate的值，例如，你可以使用:

variables['exitGate']

对于赋值，使用:

variables['exitGate'] = "some value"

但是如果你想要单独的变量，你可以使用这个:

for i, name in enumerate(variable_names):
    globals()[name] = SampleData[i]

稍后您可以像往常一样访问(获取和设置)变量 (print(exitGate); exitGate = "some value")。