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python - 打开文件并将内容存储在变量中

问题描述

代码：

import secrets 
import sys
import time
import string
from tenacity import (retry , stop_after_attempt)

#Required Defs
var = open('conf.txt','r+')
content = var.read()
print(content)

def get_random_string(length):
    letters = string.ascii_lowercase
    num = string.ascii_uppercase
    punc = string.punctuation
    spec = string.hexdigits
    one = str(num) + str(punc) + str(spec) 
    result_str = ''.join(secrets.choice(one) for i in range(length))
    print("Random string of length", length, "is:", result_str)

#Closing All Defs Here
@retry(stop=stop_after_attempt(5))
def start():
    pasw = input("Do YOu Want A Random Password: y/n: ")
    if pasw == 'y':
        leng = input("Please Type The Length Of The Password You Want: ")
        try:
            len1 = int(leng)
            get_random_string(len1)
            time.sleep(4)
        except ValueError:
            print("Only Numbers Accepted")
            time.sleep(4)
    elif pasw == 'n':
        sys.exit("You Don't Want TO Run The Program")
        time.sleep(3)
    else:
        raise Exception("Choose Only From 'y' or 'n'")

start()

问题：

我想读取调用文件的内容，conf.txt并且只想包含 2 个字符 3 个字母，它基于conf.txt. 我怎样才能做到这一点？请告诉conf.txt包含：

minspec = 1 #This tells take 2 special chars chars
minnumbers = 3 #This tells take 3 Numbers
minletter = 2 #This tells take 2 lower chars
minhex = 2 #This tells take 2 hex numbers

标签： pythonpython-3.x

解决方案

with open('file.txt', 'r') as data:
    contents = data.read()

在上面的示例中，我们使用对象名称数据以读取模式打开 file.txt。我们可以使用 data.read() 读取文件并将其存储在变量名内容中。使用的好处之一with是我们不需要关闭文件，它会自动为您关闭文件。

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