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Home Backend Development Python Tutorial Two ways to randomly generate verification codes using Python

Two ways to randomly generate verification codes using Python

Mar 16, 2017 pm 05:18 PM
python Verification code

There are many ways to randomly generate verification codes in Python. Today I will list two for you. You can also modify it on this basis and design a verification code method that suits you

Method 1:

Use the range method. For students who are unclear about the range method, please refer to the article "range() function developed in python"

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# -*- coding: utf-8 -*-

import random

def generate_verification_code(len=6):

    ''' 随机生成6位的验证码 '''

    # 注意: 这里我们生成的是0-9A-Za-z的列表,当然你也可以指定这个list,这里很灵活

    # 比如: code_list = ['P','y','t','h','o','n','T','a','b'] # PythonTab的字母

    code_list = []

    for i in range(10): # 0-9数字

        code_list.append(str(i))

    for i in range(65, 91): # 对应从“A”到“Z”的ASCII码

        code_list.append(chr(i))

    for i in range(97, 123): #对应从“a”到“z”的ASCII码

        code_list.append(chr(i))

    myslice = random.sample(code_list, len)  # 从list中随机获取6个元素,作为一个片断返回

    verification_code = ''.join(myslice) # list to string

    return verification_code

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Method 2:

Use the randint method

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# -*- coding: utf-8 -*-

import random

def generate_verification_code_v2():

    ''' 随机生成6位的验证码 '''

    code_list = []

    for i in range(2):

        random_num = random.randint(0, 9) # 随机生成0-9的数字

        # 利用random.randint()函数生成一个随机整数a,使得65<=a<=90

        # 对应从“A”到“Z”的ASCII码

        a = random.randint(65, 90)

        b = random.randint(97, 122)

        random_uppercase_letter = chr(a)

        random_lowercase_letter = chr(b)

        code_list.append(str(random_num))

        code_list.append(random_uppercase_letter)

        code_list.append(random_lowercase_letter)

    verification_code = &#39;&#39;.join(code_list)

    return verification_code

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Test:

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code = generate_verification_code(6)

code2 = generate_verification_code_v2()

print code

print code2

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Output result:

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Glc5Tr

Hr6t7B

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I personally prefer the first method, which is more flexible and can set the verification code length at will.

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