Detailed explanation of Python random numbers and random strings-Python Tutorial-php.cn

Detailed explanation of Python random numbers and random strings

高洛峰

Release： 2017-03-16 17:28:48

Original

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Random integer:

>>> import random
>>> random.randint(0,99)
21

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Randomly select an even number between 0 and 100:

>>> import random
>>> random.randrange(0, 101, 2)
42

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Random floating point number:

>>> import random
>>> random.random() 
0.85415370477785668
>>> random.uniform(1, 10)
5.4221167969800881

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Random character:

>>> import random
>>> random.choice(&#39;abcdefg&#%^*f&#39;)
&#39;d&#39;

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Select a specific number of characters from multiple characters:

>>> import random
random.sample(&#39;abcdefghij&#39;,3) 
[&#39;a&#39;, &#39;d&#39;, &#39;b&#39;]

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Select a specific number of characters from multiple characters to form a new string:

>>> import random
>>> import string
>>> string.join(random.sample([&#39;a&#39;,&#39;b&#39;,&#39;c&#39;,&#39;d&#39;,&#39;e&#39;,&#39;f&#39;,&#39;g&#39;,&#39;h&#39;,&#39;i&#39;,&#39;j&#39;], 3)).r
eplace(" ","")
&#39;fih&#39;

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Select a random string:

>>> import random
>>> random.choice ( [&#39;apple&#39;, &#39;pear&#39;, &#39;peach&#39;, &#39;orange&#39;, &#39;lemon&#39;] )
&#39;lemon&#39;

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Shuffle:

>>> import random
>>> items = [1, 2, 3, 4, 5, 6]
>>> random.shuffle(items)
>>> items
[3, 2, 5, 6, 4, 1]

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There are many functions of random, so I won’t list them all here,

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