python - 如何从字典的输出中删除括号

Question

在输出中，值打印时带有方括号，如何删除它们？

Test= {'Python':['classes','labs','tutorial'], 'Math': 
('classes','tutorial'), 'Java':['classes',{'labs':['corejava','adv 
java']}]}

for subject, details in Test.items(): 
     print(subject, "->", details)


print("after updating...")   

Test2 = {'Math':('classes','tutorial','labs')}
Test.update(Test2)
for subject, details in Test.items(): 
    print(subject, "->", details) 

Answer 1

对于这个特殊情况，我会这样做:

Test= {'Python':['classes','labs','tutorial'], 'Math': 
('classes','tutorial'), 'Java':['classes',{'labs':['corejava','adv java']}]}

for subject, details in Test.items(): 
     print(subject, "->", details)


print("after updating...")   

Test2 = {'Math':('classes','tutorial','labs')}
Test.update(Test2)
for subject, details in Test.items(): 
    try:
        print(subject, "->", ' '.join(details)) 
    except TypeError:
        print(subject, "->", ''.join(details[0]),''.join(list(details[1])),' '.join(details[1]['labs']))

输出:

Python -> ['classes', 'labs', 'tutorial']
Math -> ('classes', 'tutorial')
Java -> ['classes', {'labs': ['corejava', 'adv java']}]
after updating...
Python -> classes labs tutorial
Math -> classes tutorial labs
Java -> classes labs corejava adv java

但是

您会看到括号中的值，因为这就是列表 的显示方式，而元组 则显示在括号之间。如果您希望消除列表，那么您可以单独打印每个值并将其附加到字符串中，或​​者将整个列表变成一个大字符串并消除括号。 在最后 3 行中我添加了以下内容:

for subject, details in Test.items(): 
    print(subject, "->", details)
    print(type(details)) 

这导致了我之前谈到的输出:

Python -> ['classes', 'labs', 'tutorial']
<class 'list'>
Math -> ('classes', 'tutorial', 'labs')
<class 'tuple'>
Java -> ['classes', {'labs': ['corejava', 'adv java']}]
<class 'list'>