需要转成Python的float类型defconvertNumpyDataType(data):iftype(data) is list:return convertList(data)eliftype(data) is dict:return convertDict(data)eliftype(data) is np.float32:return convertFloat32(data)returndatadef
IndexError: list index out of range >>> 1. 2. 3. 4. 5. 6. 上述代码 code_list[4] 试图访问 code_list 列表的第5个元素,由于 code_list 列表最多只有 4 个元素,所以会引发IndexError 3.4 KeyError 异常 KeyError 异常是试图访问字典里不存在的键时而引发的异常。 在Python Shell 中执行如下代码: ...
Python内置(6)any、数学、callable、序列操作 >>> def is_callable(item): ... >>> is_callable(list) True >>> def function(): ... >>> is_callable(function) True >>> class MyClass: ... >>> is_callable(MyClass) True >>> is_callable('abcd') False 我们的is_callable()几乎和内置...
列表可能是在使用python中最为常用的数据结构了,它类似于其他语言中的数组,但又可以存储多种数据类型,同时还可以自适应更改列表长度。可以说,在python中几乎没有一个列表解决不了的数据结构,如果有,那就…… 列表简单易用且不失功能强大,除了丰富的魔法方法外,列表支持直接调用的接口并不多(通过dir(list)命令可以...
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for element in my_set: print(element) 6.Nested Structures: Python also supports nested data structures, such as lists of lists, dictionaries within lists, etc. Loops can be used to navigate through these complex structures. nested_list = [[1, 2, 3], [4, 5, 6], [7, 8, 9]] ...
1value =input()2dic ={}3foriinvalue:4num = value.count(i)#循环计算每个字符出现的次数5dic[i] = num#将统计信息加入字典以便查找6print("出现最多的次数为:%d"%max(dic.values()))#输出查询结果7character_list = [kfork, vindic.items()ifdic[k] ==max(dic.values())]8print("---出现%s...
8. TypeError: Object of type set is not JSON serializable 9. TypeError: list indices must be integers or slices, not tuple 10. TypeError: strptime() argument 1 must be str, not datetime.datetime 11. RecursionError: maximum recursion depth exceeded while calling a Python object ...
urllib2 re time random traceback sys MySQLdb os (sys) sys.setdefaultencoding() SleepNum = HOST = FTPHost = get_year(time): year = time.split()[] (year) no_previous10(timelist): t (,(timelist)): year = get_year(timelist[t]) year<: : getWebData(url): url headers = (,) ...
There are tons more tricky model optimization techniques described in my blog posts, so you'll have to find them yourself. I don't dare to list the URL here because it is annoying to see so many issues being posted. And unfortunately, all articles are in Japanese. ...