Python 将for循环转换为列表理解以形成字典

有一个字典作为输入，第二个字典是根据它在以下代码中形成的：

dict1 = {'a': 'ok', 'b': 'ok', 'c': 'needs repair'}

final_dict = {}
for d in dict1.items():
    if d[1] == 'ok':
        final_dict[d[0]] = 'needs repair'
    else:
        final_dict[d[0]] = 'ok'

print(final_dict)

打印出来的地方：

{'a': 'needs repair', 'b': 'needs repair', 'c': 'ok'}

---

如何将for循环更改为列表理解？

您可以使用字典理解-列表理解在这里没有多大意义：

# what to change into what
flipper = {"ok":"needs repair", "needs repair":"ok"}

source = {'a': 'ok', 'b': 'ok', 'c': 'needs repair'}
flipped = { key:flipper[value] for key, value in source.items()}

print(source)
print(flipped)

输出：

{'a': 'ok', 'b': 'ok', 'c': 'needs repair'}
{'a': 'needs repair', 'b': 'needs repair', 'c': 'ok'}

---

您可以使用字典理解-列表理解在这里没有多大意义：

# what to change into what
flipper = {"ok":"needs repair", "needs repair":"ok"}

source = {'a': 'ok', 'b': 'ok', 'c': 'needs repair'}
flipped = { key:flipper[value] for key, value in source.items()}

print(source)
print(flipped)

输出：

{'a': 'ok', 'b': 'ok', 'c': 'needs repair'}
{'a': 'needs repair', 'b': 'needs repair', 'c': 'ok'}

---

您可以将for循环重新写入，如下所示：

dict1 = {'a': 'ok', 'b': 'ok', 'c': 'needs repair'}

result = {k: 'needs repair' if v == 'ok' else 'ok' for k, v in dict1.items()}
print(result)

输出

---

您可以将for循环重新写入，如下所示：

dict1 = {'a': 'ok', 'b': 'ok', 'c': 'needs repair'}

result = {k: 'needs repair' if v == 'ok' else 'ok' for k, v in dict1.items()}
print(result)

输出

---

你可以通过一个单独的听写理解来完成，如下所示：

>>> final_dict = {k: 'needs repair' if v == 'ok' else 'ok' for k, v in dict1.items()}
>>> final_dict
{'a': 'needs repair', 'b': 'needs repair', 'c': 'ok'}
>>> 

实际上，我会把长队分开：

final_dict = {k: 'needs repair' if v == 'ok' else 'ok'
              for k, v in dict1.items()}

---

你可以通过一个单独的听写理解来完成，如下所示：

>>> final_dict = {k: 'needs repair' if v == 'ok' else 'ok' for k, v in dict1.items()}
>>> final_dict
{'a': 'needs repair', 'b': 'needs repair', 'c': 'ok'}
>>> 

实际上，我会把长队分开：

final_dict = {k: 'needs repair' if v == 'ok' else 'ok'
              for k, v in dict1.items()}

---

如果你要查字典，那就更好了

final_dict = { k: 'needs repair' if v=='ok' else 'ok' for k,v in dict1.items()}

---

如果你要查字典，那就更好了

final_dict = { k: 'needs repair' if v=='ok' else 'ok' for k,v in dict1.items()}