# 写入数据 with tf.python_io.TFRecordWriter("data/tf_records/captcha.tfrecords") as writer: for i in range(2000): # 全部使用string保存 image_string = image_batch[i].eval().tostring() label_string = target[i].eval().to
在Python 中,Enum 是一种非常实用的工具,它提供了一种独特的数据类型来表示一组命名的常量。Python 标准库提供了几种常见的枚举类,如 IntEnum 和 StrEnum,用于特定场景。但有时我们需要更加灵活的方式来创建不同的数据类型枚举,如浮点数、布尔值、字节类型等。本文将深入介绍 Python Enum 的基本用法,并探索如何扩...
The example shows how theFlagcan be used on permissions. $ python main.py [<Perm.EXECUTE: 1>, <Perm.WRITE: 2>, <Perm.READ: 4>] Perm.READ|WRITE Enum with a static method The following example presents an enumeration with a custom static method. main.py #!/usr/bin/python from enum ...
This allows one to have properties active on an instance, and have virtual attributes on the class with the same name (see Enum for an example). """def__init__(self, fget=None, fset=None, fdel=None, doc=None): self.fget = fget self.fset = fset self.fdel = fdel# next two li...
IntEnum and IntFlag should be used only in cases where Enum and Flag will not do; for example, when integer constants are replaced with enumerations, or for interoperability with other systems. Others While IntEnum is part of the enum module, it would be very simple to implement ...
### 基础概念 MySQL中的ENUM是一种字符串对象,用于指定一个列可以拥有的值列表。实际上,ENUM类型在内部是以整数表示的,每个枚举值都会被分配一个从1开始的索引编号,0或NULL表示无效值...
Consider the following example, where you create an enum with user-provided members: Python >>> from enum import Enum >>> names = [] >>> while True: ... name = input("Member name: ") ... if name in {"q", "Q"}: ... break ... names.append(name.upper()) ... Memb...
第三方库:protobuf在 Protocol Buffers (protobuf) 中,你可以使用enum定义枚举类型。.../;example";package example;// 定义枚举类型enum Status { OK = 0; ERROR = 1; UNKNOWN = 2;}// 定义消息类型message 22210 C++枚举类型enum与enum class
See TimePeriod for an example. __call__(cls, value, names=None, *, module=None, qualname=None, type=None, start=1, boundary=None) This method is called in two different ways: to look up an existing member: cls The enum class being called. 值 The value to lookup. to use the cls...
In this example, a list of two-part tuples is given instead of a single string containing only the member names. This makes it possible to reconstruct theBugStatusenumeration with the members in the same order as the version defined inenum_create.py. ...