Python 如何生成随机字符串
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How to generate a random string
提问by Izzy
I'm trying to do a code where is generates a random string, but I have only just started coding so I don't want anything to the code to be too complicated.
我正在尝试编写一个生成随机字符串的代码，但我才刚刚开始编码，所以我不希望代码太复杂。
import random, string
randomthing = random.choice(string)
print(randomthing(10))
But it keeps saying the length (len) is not defined. What should I do?
但它一直说长度（len）没有定义。我该怎么办？
回答by Aravindh
In case, you want to generate unique strings:
如果您想生成唯一的字符串：
import uuid
print uuid.uuid4() # e3c8a1c3-9965-4356-9072-1002632a96e1
print uuid.uuid4().hex # e3c8a1c39965435690721002632a96e1
回答by Abdul Fatir
stringmodule does not have lenyou might want to try this:
string模块没有len你可能想试试这个：
Python2:
蟒蛇2：
rand_str = lambda n: ''.join([random.choice(string.lowercase) for i in xrange(n)])
# Now to generate a random string of length 10
s = rand_str(10)
Python3:
蟒蛇3：
rand_str = lambda n: ''.join([random.choice(string.ascii_lowercase) for i in xrange(n)])
# Now to generate a random string of length 10
s = rand_str(10)
random.choicereturns a single character and 10 such characters are joined using the joinfunction.
random.choice返回单个字符，并使用该join函数连接 10 个这样的字符。
EDIT
编辑
lambda n : ...creates a lambda function which takes nas the argument.
lambda n : ...创建一个以n参数为参数的 lambda 函数。
''.join(sequence)joins a sequence into a string with empty string ('') between them i.e. it simply joins characters into words.'.'.join(['a','b','c'])will for example, return a.b.c.
''.join(sequence)将一个序列连接成一个字符串，''它们之间有空字符串 ( )，即它只是将字符连接成单词。'.'.join(['a','b','c'])例如，将返回a.b.c。
回答by Vijayanand Premnath
This has been already answered in Random strings in PythonGenerating strings from (for example) lowercase characters:
这已经在 PythonGenerating strings from (for example) smallcase characters中的随机字符串中得到了回答：
import random, string
def randomword(length):
return ''.join(random.choice(string.lowercase) for i in range(length))
Results:
结果：
>>> randomword(10)
'vxnxikmhdc'
>>> randomword(10)
'ytqhdohksy'
回答by David Guyon
Whenever I think about random strings it reminds me about Lorem Ipsum. It exists the loremipsum python packagewhich you can use like this:
每当我想到随机字符串时，它就会让我想起Lorem Ipsum。它存在loremipsum python 包，您可以像这样使用它：
from loremipsum import get_sentences
sentences_list = get_sentences(5)
If you don't mind about the exact number of char in the string, it may be a nice solution to generate random strings that look like sentences.
如果您不介意字符串中字符的确切数量，生成看起来像句子的随机字符串可能是一个不错的解决方案。
回答by Dark Force 8
STEP 1:
第1步：
Generate a random number between 97 and 122 (including both) using random.randint(97,122)
使用以下方法生成 97 到 122（包括两者）之间的随机数 random.randint(97,122)
STEP 2:
第2步：
Convert the random number to a letter using str(unichr(<random number>))
使用将随机数转换为字母 str(unichr(<random number>))
STEP 3:
第 3 步：
Append the string to the final string
将字符串附加到最终字符串
something like:
就像是：
randomString=""
for i in range(10):
randomString += (str(unichr(random.randint(97,122)))) #intended to put tab space.
print randomString #I'm new to Stackoverflow
