(self): """ Generator, equal usage as range(xlrd.ncols), to iterate columns in ordered sequence :return: yield Column index """ for idx in self.columns.values(): yield idx def __getitem__(self, item): """ Make class object subscriptable :param item: Column Name :return: Columns ...
1, 2) # A tuple >>> subscriptable[0] 0 >>> subscriptable = "012" # A string >>> subscriptable[0] '0' >>> not_subscriptable = {0, 1, 2} # A set >>> not_subscriptable[0] Traceback (most recent call last): File "", line 1, inTypeError: 'set' object is ...
>>> from enum import Enum >>> class SwitchPosition(Enum): ... ON = True ... OFF = False ... >>> list(SwitchPosition) [<SwitchPosition.ON: True>, <SwitchPosition.OFF: False>] >>> class UserResponse(Enum): ... YES = True ... NO = False ... >>> list(UserResponse) [<U...
File "C:\Users\w\AppData\Local\Programs\Python\Python37\lib\socketserver.py", line 357, in finish_request self.RequestHandlerClass(request, client_address, self) File "C:\Users\w\AppData\Local\Programs\Python\Python37\lib\socketserver.py", line 717, in __init__ self.handle() File "C...
在这第二版中增加了 200 多页后,我将可选部分“集合和字典的内部”移至fluentpython.com伴随网站。更新和扩展的18 页文章包括关于以下内容的解释和图表: 哈希表算法和数据结构,从在set中的使用开始,这更容易理解。 保留dict实例中键插入顺序的内存优化(自 Python 3.6 起)。
The “TypeError: ‘function’ object is not subscriptable” error is raised when you try to access an item from a function as if the function were an iterable object, like a string or a list. To solve this error, first make sure that you do not override any variables that store values...
Received data type: <class 'int'>, Value: 5 Error: 'int' object is not subscriptable How to Fix and Prevent the Error Resolving thisTypeErrorinvolves ensuring that you only attempt subscripting operations on appropriate data types. Here are several strategies: ...
Algorithms and How to Apply Them.The one exception to this rule where it may make sense to use aforloop is when dealing with apd.GroupByobject, which can be efficiently iterated like a dictionary:df = pd.DataFrame({ "column": ["a", "a", "b", "a", "b"], "value": [0, 1, ...
TypeError: 'dict_keys' object is not subscriptable TypeError: ‘dict_keys’objectisnotsubscriptable今天在学习《Python数据分析》的时候,遇到了一个属于Python3代码兼容问题的BUG。具体如下图吧所示: 在这里,只要先把它转为 list 对象再进行切片, 就可以了。具体如下: ...
在学习neural-networks-and-deep-learning 这本书的时候下载了代码,代码运行过程中由于python的版本(我的是3.5),出现了许多错误。 1、TypeError: object of type 'zip' has no len()、'zip' objectisnotsubscriptable 对应的错误部分为:解决方案:将所有用到zip的部分都变成 ...