Question

我有以下字典。对于值为['FAIL', 'PASS']的对象，我只想将其替换为'PASS'。

Dict = [('Main Menu-046', ['PASS']), ('Main Menu-047', ['FAIL']), ('Main Menu-044', ['FAIL', 'PASS']), ('Main Menu-045', ['PASS']), ('Main Menu-042', ['FAIL', 'PASS']), ('Main Menu-043', ['FAIL'])

我尝试了以下内容：

if "FAIL" in [x for v in Dict.values() for x in v]: ## if true
    Dict.values == "PASS"

Answer 1

如果我正确理解了您的问题，您希望将['FAIL', 'PASS']替换为['PASS']

processed_list = [(x[0], ["PASS"] if "PASS" in x[1] else x[1]) for x in Dict]

结果：

[('Main Menu-046', ['PASS']),
 ('Main Menu-047', ['FAIL']),
 ('Main Menu-044', ['PASS']),
 ('Main Menu-045', ['PASS']),
 ('Main Menu-042', ['PASS']),
 ('Main Menu-043', ['FAIL'])]

Answer 2

您不使用dict，而是使用(Main, [PASS/FAIL])

对的列表

如果您需要字典，可以d = { key:value, key:value ... }或d = dict()创建字典，只需d['newkey'] = value

添加项目即可

另外，如果您愿意，可以像这样应用默认值：

from collections import defaultdict

d = defaultdict(lambda : defaultvalue)

当你有你的词典时，尝试一个循环：

for key in d.keys():
  if d[key] == 'FAIL': # or if 'FAIL' in d[key] if d[key] is a list like ['FAIL']
    d[key] = 'PASS' # or == ? why a boolean without condition or return ?

替换Python字典中的列表值

2 个答案: