Python 检查随机数是否已经存在_Python

Python 检查随机数是否已经存在

python

Python 检查随机数是否已经存在,python,Python,我想生成随机数并将其写入.txt文件。范围是：str（random.randint（0,10））在生成随机数之前，我的代码应该首先检查.txt文件。在这个文本文件中已经写下了一些随机数。如果随机数已经存在，它应该生成一个新的随机数并将其添加到我的.txt文件中 randomTxt = './random.txt' def checkRandomNumberExists(value): with open(randomTxt, 'a+') as random: gen

我想生成随机数并将其写入.txt文件。范围是：

str（random.randint（0,10））

在生成随机数之前，我的代码应该首先检查.txt文件。在这个文本文件中已经写下了一些随机数。如果随机数已经存在，它应该生成一个新的随机数并将其添加到我的.txt文件中

randomTxt = './random.txt'

def checkRandomNumberExists(value):
    with open(randomTxt, 'a+') as random:
        genRandom = str(random.randint(1,10))
        if value in random:
            random.write(genRandom)
        random.write('\n')

我怀疑我走错了路。谁能帮帮我吗。

提前感谢

尝试在内部使用while循环：

randomTxt = './random.txt'
with open(randomTxt, 'a+') as file:
    text = file.read()
    genRandom = str(random.randint(1,10))
    while genRandom in text:
        genRandom = str(random.randint(1,10))
    file.write(genRandom)
    file.write('\n')

注意：请不要将文件和变量命名为内置名称（即随机），因为它可能会覆盖原始模块。

尝试在内部使用while循环：

randomTxt = './random.txt'
with open(randomTxt, 'a+') as file:
    text = file.read()
    genRandom = str(random.randint(1,10))
    while genRandom in text:
        genRandom = str(random.randint(1,10))
    file.write(genRandom)
    file.write('\n')

注意：请不要将文件和变量命名为内置名称（即random），因为它可能会覆盖原始模块。

我看不出有任何理由在函数中使用参数，因为您正在生成随机数，并且生成的随机数介于1-10之间，如果文本中添加了所有数字，如果它添加了除1,2,3…10以外的数字，请编辑您的问题并提及

下面的代码将检查文本文件中是否存在数字，如果不存在，则将在文本文件中添加数字，否则将打印数字已存在的消息

代码

import random
lines = []
num = random.randint(0,10)
f= open("random.txt","w+")
def checkRandomNumberExists():
    with open("random.txt") as file:
        for line in file: 
            line = line.strip()
            lines.append(line)

    if str(num) not in lines:
        with open("random.txt", "a") as myfile:
            myfile.write(str(num)+'\n')
            print(str(num)+ ' is added in text file')
    else:
        print(str(num)+ ' is already exists in text file')

checkRandomNumberExists()

7 is added in text file

7 is already exists in text file

插入新值时输出

import random
lines = []
num = random.randint(0,10)
f= open("random.txt","w+")
def checkRandomNumberExists():
    with open("random.txt") as file:
        for line in file: 
            line = line.strip()
            lines.append(line)

    if str(num) not in lines:
        with open("random.txt", "a") as myfile:
            myfile.write(str(num)+'\n')
            print(str(num)+ ' is added in text file')
    else:
        print(str(num)+ ' is already exists in text file')

checkRandomNumberExists()

7 is added in text file

7 is already exists in text file

当值已在文本文件中时输出

import random
lines = []
num = random.randint(0,10)
f= open("random.txt","w+")
def checkRandomNumberExists():
    with open("random.txt") as file:
        for line in file: 
            line = line.strip()
            lines.append(line)

    if str(num) not in lines:
        with open("random.txt", "a") as myfile:
            myfile.write(str(num)+'\n')
            print(str(num)+ ' is added in text file')
    else:
        print(str(num)+ ' is already exists in text file')

checkRandomNumberExists()

7 is added in text file

7 is already exists in text file

我看不出有任何理由在函数中使用参数，因为您生成的是随机数，您生成的是1-10之间的随机数，如果文本中添加了所有数字，那么如果它添加了除1,2,3…10以外的数字，请编辑您的问题并提一下

下面的代码将检查文本文件中是否存在数字，如果不存在，则将在文本文件中添加数字，否则将打印数字已存在的消息

代码

import random
lines = []
num = random.randint(0,10)
f= open("random.txt","w+")
def checkRandomNumberExists():
    with open("random.txt") as file:
        for line in file: 
            line = line.strip()
            lines.append(line)

    if str(num) not in lines:
        with open("random.txt", "a") as myfile:
            myfile.write(str(num)+'\n')
            print(str(num)+ ' is added in text file')
    else:
        print(str(num)+ ' is already exists in text file')

checkRandomNumberExists()

7 is added in text file

7 is already exists in text file

插入新值时输出

import random
lines = []
num = random.randint(0,10)
f= open("random.txt","w+")
def checkRandomNumberExists():
    with open("random.txt") as file:
        for line in file: 
            line = line.strip()
            lines.append(line)

    if str(num) not in lines:
        with open("random.txt", "a") as myfile:
            myfile.write(str(num)+'\n')
            print(str(num)+ ' is added in text file')
    else:
        print(str(num)+ ' is already exists in text file')

checkRandomNumberExists()

7 is added in text file

7 is already exists in text file

当值已在文本文件中时输出

import random
lines = []
num = random.randint(0,10)
f= open("random.txt","w+")
def checkRandomNumberExists():
    with open("random.txt") as file:
        for line in file: 
            line = line.strip()
            lines.append(line)

    if str(num) not in lines:
        with open("random.txt", "a") as myfile:
            myfile.write(str(num)+'\n')
            print(str(num)+ ' is added in text file')
    else:
        print(str(num)+ ' is already exists in text file')

checkRandomNumberExists()

7 is added in text file

7 is already exists in text file

当您同时使用

random

模块时，将打开的文件命名为“random”不是一个好主意。新随机数的生成速率是多少？每秒100次，每分钟一次，每天一次？这将影响代码的编写效率。您希望生成多少随机数？您可以实例化一个集合（从现有文件）并将生成的数字添加到集合中…之后，您可以检查生成的数字是否已在集合中。这是否回答了您的问题@molbdnilo更改了文件名当您同时使用

random