Dictionary 如何递归打印Python字典及其子字典，并将空格对齐到列中

我想创建一个函数，它可以接受一个字典的字典，如下所示

information = {
    "sample information": {
        "ID": 169888,
        "name": "ttH",
        "number of events": 124883,
        "cross section": 0.055519,
        "k factor": 1.0201,
        "generator": "pythia8",
        "variables": {
            "trk_n": 147,
            "zappo_n": 9001
        }
    }
}

然后以如下简洁的方式打印，并使用空格对齐键和值：

sample information:
   ID:                 169888
   name:               ttH
   number of events:   124883
   cross section:      0.055519
   k factor:           1.0201
   generator:          pythia8
   variables:
      trk_n:           147
      zappo_n:         9001

我对该函数的尝试如下：

def printDictionary(
    dictionary = None,
    indentation = ''
    ):
    for key, value in dictionary.iteritems():
        if isinstance(value, dict):
            print("{indentation}{key}:".format(
            indentation = indentation,
            key = key
        ))
            printDictionary(
                dictionary = value,
                indentation = indentation + '   '
            )
        else:
            print(indentation + "{key}: {value}".format(
                key = key,
                value = value
            ))

sample information:
   name: ttH
   generator: pythia8
   cross section: 0.055519
   variables:
      zappo_n: 9001
      trk_n: 147
   number of events: 124883
   k factor: 1.0201
   ID: 169888

它产生如下输出：

def printDictionary(
    dictionary = None,
    indentation = ''
    ):
    for key, value in dictionary.iteritems():
        if isinstance(value, dict):
            print("{indentation}{key}:".format(
            indentation = indentation,
            key = key
        ))
            printDictionary(
                dictionary = value,
                indentation = indentation + '   '
            )
        else:
            print(indentation + "{key}: {value}".format(
                key = key,
                value = value
            ))

sample information:
   name: ttH
   generator: pythia8
   cross section: 0.055519
   variables:
      zappo_n: 9001
      trk_n: 147
   number of events: 124883
   k factor: 1.0201
   ID: 169888

如图所示，它成功地递归打印了字典字典，但是它没有将值对齐到一个整洁的列中。对于任意深度的词典，有什么合理的方法可以做到这一点？

尝试使用该模块。您可以这样做，而不是编写自己的函数：

import pprint
pprint.pprint(my_dict)

请注意，这将在字典周围打印{和}等字符，在列表周围打印[]，但如果可以忽略它们，pprint将为您处理所有嵌套和缩进