entityMap|0|type|LINK|mutability|MUTABLE|data|url|https://docs.python.org/2/library/uuid.html#module-uuid|blocks|key|8i6f4|text|如果您使用的是Python+2.5或更高版本，uuid+module已经包含在Python标准发行版中。|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|bgouv|例如：|8as52|>>>+import+uuid
>>>+uuid.uuid4()
UUID('5361a11b-615c-42bf-9bdb-e2c3790ada14')|code-block|syntax|javascript^0|N|B|N|B|0|0|0^^$0|$1|$2|3|4|5|6|$7|8]]]|9|@$A|B|C|D|2|E|F|T|G|@$H|U|I|V|J|K]]|L|@$H|W|I|X|A|Y]]|6|$]]|$A|M|C|N|2|E|F|Z|G|@]|L|@]|6|$]]|$A|O|C|P|2|Q|F|10|G|@]|L|@]|6|$R|S]]]]

If you're using Python 2.5 or later, the <a href="https://docs.python.org/2/library/uuid.html#module-uuid" rel="noreferrer" title="uuid module">uuid module</a> is already included with the Python standard distribution.

Ex: 

<pre><code>&gt;&gt;&gt; import uuid
&gt;&gt;&gt; uuid.uuid4()
UUID('5361a11b-615c-42bf-9bdb-e2c3790ada14')
</code></pre>

entityMap|blocks|key|ejvc6|text|我使用GUID作为数据库类型操作的随机键。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1c8q|十六进制的形式，加上破折号和额外的字符，对我来说似乎不必要地长。但我也喜欢表示十六进制数字的字符串非常安全，因为它们不包含在某些情况下可能会导致问题的字符，例如'%2B‘、'=’等。|88qpa|我不使用十六进制，而是使用url安全的base64字符串。以下内容不符合任何UUID/GUID规范(除了具有所需的随机性)。|chqge|import+base64
import+uuid

#+get+a+UUID+-+URL+safe,+Base64
def+get_a_uuid():
++++r_uuid+=+base64.urlsafe_b64encode(uuid.uuid4().bytes)
++++return+r_uuid.replace('=',+'')|code-block|syntax|javascript^0|0|0|0^^$0|$]|1|@$2|3|4|5|6|7|8|L|9|@]|A|@]|B|$]]|$2|C|4|D|6|7|8|M|9|@]|A|@]|B|$]]|$2|E|4|F|6|7|8|N|9|@]|A|@]|B|$]]|$2|G|4|H|6|I|8|O|9|@]|A|@]|B|$J|K]]]]

I use GUIDs as random keys for database type operations.

The hexadecimal form, with the dashes and extra characters seem unnecessarily long to me. But I also like that strings representing hexadecimal numbers are very safe in that they do not contain characters that can cause problems in some situations such as '+','=', etc..

Instead of hexadecimal, I use a url-safe base64 string. The following does not conform to any UUID/GUID spec though (other than having the required amount of randomness).

<pre><code>import base64
import uuid

# get a UUID - URL safe, Base64
def get_a_uuid():
 r_uuid = base64.urlsafe_b64encode(uuid.uuid4().bytes)
 return r_uuid.replace('=', '')
</code></pre>

entityMap|blocks|key|4o7oj|text|如果您需要为您的模型或唯一字段的主键传递UUID，那么下面的代码将返回UUID对象-|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2a51j|import+uuid
+uuid.uuid4()|code-block|syntax|javascript|d6hho|如果你需要传递UUID作为URL的参数，你可以像下面的代码那样做-|fpj9t|import+uuid
str(uuid.uuid4())|arjij|如果您想要一个UUID的十六进制值，您可以执行以下操作-|20saa|import+uuid++++
uuid.uuid4().hex^0|0|0|0|0|0^^$0|$]|1|@$2|3|4|5|6|7|8|P|9|@]|A|@]|B|$]]|$2|C|4|D|6|E|8|Q|9|@]|A|@]|B|$F|G]]|$2|H|4|I|6|7|8|R|9|@]|A|@]|B|$]]|$2|J|4|K|6|E|8|S|9|@]|A|@]|B|$F|G]]|$2|L|4|M|6|7|8|T|9|@]|A|@]|B|$]]|$2|N|4|O|6|E|8|U|9|@]|A|@]|B|$F|G]]]]

If you need to pass UUID for a primary key for your model or unique field then below code returns the UUID object - 

<pre><code> import uuid
 uuid.uuid4()
</code></pre>

If you need to pass UUID as a parameter for URL you can do like below code -

<pre><code>import uuid
str(uuid.uuid4())
</code></pre>

If you want the hex value for a UUID you can do the below one - 

<pre><code>import uuid 
uuid.uuid4().hex
</code></pre>

entityMap|0|type|LINK|mutability|MUTABLE|data|url|https://stackoverflow.com/a/58416992/8874388|1|https://docs.python.org/3/library/uuid.html|blocks|key|7ig7n|text|2019答案(适用于Windows)：|unstyled|depth|inlineStyleRanges|entityRanges|cea59|如果您想要一个永久的UUID来唯一标识Windows上的计算机，您可以使用此技巧：(从我的答案中复制，地址为https://stackoverflow.com/a/58416992/8874388).|offset|length|5jp16|from+typing+import+Optional
import+re
import+subprocess
import+uuid

def+get_windows_uuid()+->+Optional[uuid.UUID]:
++++try:
++++++++#+Ask+Windows+for+the+device's+permanent+UUID.+Throws+if+command+missing/fails.
++++++++txt+=+subprocess.check_output("wmic+csproduct+get+uuid").decode()

++++++++#+Attempt+to+extract+the+UUID+from+the+command's+result.
++++++++match+=+re.search(r"\bUUID\b[\s\r\n]%2B([%5E\s\r\n]%2B)",+txt)
++++++++if+match+is+not+None:
++++++++++++txt+=+match.group(1)
++++++++++++if+txt+is+not+None:
++++++++++++++++#+Remove+the+surrounding+whitespace+(newlines,+space,+etc)
++++++++++++++++#+and+useless+dashes+etc,+by+only+keeping+hex+(0-9+A-F)+chars.
++++++++++++++++txt+=+re.sub(r"[%5E0-9A-Fa-f]%2B",+"",+txt)

++++++++++++++++#+Ensure+we+have+exactly+32+characters+(16+bytes).
++++++++++++++++if+len(txt)+==+32:
++++++++++++++++++++return+uuid.UUID(txt)
++++except:
++++++++pass+#+Silence+subprocess+exception.

++++return+None

print(get_windows_uuid())|code-block|syntax|javascript|3qs1a|使用Windows+API获取计算机的永久UUID，然后处理字符串以确保它是有效的UUID，最后返回一个Python对象(https://docs.python.org/3/library/uuid.html)这为您提供了使用数据的方便方法(例如128位整数、十六进制字符串等)。|e2qad|祝你好运！|7f1d9|PS:子进程调用可能会被直接调用Windows内核/DLL的ctype所取代。但就我的目的而言，这个函数就是我需要的全部。它进行强大的验证并产生正确的结果。^0|0|1I|18|0|0|0|1P|17|1|0|0^^$0|$1|$2|3|4|5|6|$7|8]]|9|$2|3|4|5|6|$7|A]]]|B|@$C|D|E|F|2|G|H|Z|I|@]|J|@]|6|$]]|$C|K|E|L|2|G|H|10|I|@]|J|@$M|11|N|12|C|13]]|6|$]]|$C|O|E|P|2|Q|H|14|I|@]|J|@]|6|$R|S]]|$C|T|E|U|2|G|H|15|I|@]|J|@$M|16|N|17|C|18]]|6|$]]|$C|V|E|W|2|G|H|19|I|@]|J|@]|6|$]]|$C|X|E|Y|2|G|H|1A|I|@]|J|@]|6|$]]]]

2019 Answer (for Windows):

If you want a permanent UUID that identifies a machine uniquely on Windows, you can use this trick: (Copied from my answer at <a href="https://stackoverflow.com/a/58416992/8874388">https://stackoverflow.com/a/58416992/8874388</a>).



<pre><code>from typing import Optional
import re
import subprocess
import uuid

def get_windows_uuid() -&gt; Optional[uuid.UUID]:
 try:
 # Ask Windows for the device's permanent UUID. Throws if command missing/fails.
 txt = subprocess.check_output("wmic csproduct get uuid").decode()

 # Attempt to extract the UUID from the command's result.
 match = re.search(r"\bUUID\b[\s\r\n]+([^\s\r\n]+)", txt)
 if match is not None:
 txt = match.group(1)
 if txt is not None:
 # Remove the surrounding whitespace (newlines, space, etc)
 # and useless dashes etc, by only keeping hex (0-9 A-F) chars.
 txt = re.sub(r"[^0-9A-Fa-f]+", "", txt)

 # Ensure we have exactly 32 characters (16 bytes).
 if len(txt) == 32:
 return uuid.UUID(txt)
 except:
 pass # Silence subprocess exception.

 return None

print(get_windows_uuid())
</code></pre>

Uses Windows API to get the computer's permanent UUID, then processes the string to ensure it's a valid UUID, and lastly returns a Python object (<a href="https://docs.python.org/3/library/uuid.html" rel="nofollow noreferrer">https://docs.python.org/3/library/uuid.html</a>) which gives you convenient ways to use the data (such as 128-bit integer, hex string, etc).

Good luck!

PS: The subprocess call could probably be replaced with ctypes directly calling Windows kernel/DLLs. But for my purposes this function is all I need. It does strong validation and produces correct results.

entityMap|blocks|key|8tjec|text|此函数完全可配置，并根据指定的格式生成唯一的uid|type|unstyled|depth|inlineStyleRanges|entityRanges|data|e3lv5|例如：8、4、4、4、12，这是前面提到的格式，它将生成以下uuid|cofmn|LxoYNyXe-7hbQ-caJt-DSdU-PDAht56cMEWi|c5gv8|import+random+as+r

+def+generate_uuid():
++++++++random_string+=+''
++++++++random_str_seq+=+"0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
++++++++uuid_format+=+[8,+4,+4,+4,+12]
++++++++for+n+in+uuid_format:
++++++++++++for+i+in+range(0,n):
++++++++++++++++random_string+%2B=+str(random_str_seq[r.randint(0,+len(random_str_seq)+-+1)])
++++++++++++if+n+!=+12:
++++++++++++++++random_string+%2B=+'-'
++++++++return+random_string|code-block|syntax|javascript^0|0|0|0^^$0|$]|1|@$2|3|4|5|6|7|8|L|9|@]|A|@]|B|$]]|$2|C|4|D|6|7|8|M|9|@]|A|@]|B|$]]|$2|E|4|F|6|7|8|N|9|@]|A|@]|B|$]]|$2|G|4|H|6|I|8|O|9|@]|A|@]|B|$J|K]]]]

This function is fully configurable and generates unique uid based on the format specified 

eg:- [8, 4, 4, 4, 12] , this is the format mentioned and it will generate the following uuid 

<blockquote>
 LxoYNyXe-7hbQ-caJt-DSdU-PDAht56cMEWi
</blockquote>

<pre><code> import random as r

 def generate_uuid():
 random_string = ''
 random_str_seq = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
 uuid_format = [8, 4, 4, 4, 12]
 for n in uuid_format:
 for i in range(0,n):
 random_string += str(random_str_seq[r.randint(0, len(random_str_seq) - 1)])
 if n != 12:
 random_string += '-'
 return random_string
</code></pre>

entityMap|0|type|LINK|mutability|MUTABLE|data|url|https://www.geeksforgeeks.org/generating-random-ids-python/|blocks|key|2rnnn|text|检查this帖子，帮了我很多。简而言之，对我来说最好的选择是：|unstyled|depth|inlineStyleRanges|offset|length|style|UNDERLINE|entityRanges|9eoce|import+random+
import+string+

#+defining+function+for+random+
#+string+id+with+parameter+
def+ran_gen(size,+chars=string.ascii_uppercase+%2B+string.digits):+
++++return+''.join(random.choice(chars)+for+x+in+range(size))+

#+function+call+for+random+string+
#+generation+with+size+8+and+string++
print+(ran_gen(8,+"AEIOSUMA23"))|code-block|syntax|javascript|ehecj|因为我只需要4-6个随机字符，而不是笨重的GUID。^0|2|4|2|4|0|0|0^^$0|$1|$2|3|4|5|6|$7|8]]]|9|@$A|B|C|D|2|E|F|T|G|@$H|U|I|V|J|K]]|L|@$H|W|I|X|A|Y]]|6|$]]|$A|M|C|N|2|O|F|Z|G|@]|L|@]|6|$P|Q]]|$A|R|C|S|2|E|F|10|G|@]|L|@]|6|$]]]]

Check <a href="https://www.geeksforgeeks.org/generating-random-ids-python/" rel="nofollow noreferrer">this</a> post, helped me a lot. In short, the best option for me was:

<pre><code>import random 
import string 

# defining function for random 
# string id with parameter 
def ran_gen(size, chars=string.ascii_uppercase + string.digits): 
 return ''.join(random.choice(chars) for x in range(size)) 

# function call for random string 
# generation with size 8 and string 
print (ran_gen(8, "AEIOSUMA23")) 
</code></pre>

Because I needed just 4-6 random characters instead of bulky GUID.

How do I create a GUID in Python that is platform independent? I hear there is a method using ActivePython on Windows but it's Windows only because it uses COM. Is there a method using plain Python?

How to create a GUID/UUID in Python

数据库

Windows

Python

 如何在Python中创建独立于平台的GUID？我听说有一种在Windows上使用ActivePython的方法，但它只在Windows中使用，因为它使用COM。有没有使用纯Python的方法？

问如何在Python中创建GUID/UUID
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