python - 如何在 python 中使用电子表格或等效项来存储列表？

Question

我正在寻找一种方法将我的列表存储在电子表格中，以便我可以读取以检查帐户是否存在以及写入以便创建新帐户。

下面的示例仅包含用户名和密码，但我还在代码的创建帐户部分中要求提供电子邮件，以便也将其存储在电子表格中。

此外，我很好奇是否有人有任何关于使其更安全的提示。

userlist = ["user1","user2","user3"]
passlist = ["pass1","pass2","pass3"]

username = str(input("\n[Login to an existing account]\nUsername:"))
password = str(input("Password:"))
    if username in userlist:
        if password == passlist[userlist.index(username)]:
            logged_in = True

Answer 1

Hunter，如果您真的想使用电子表格来做这类事情，请查看 XlsxWriter和 OpenPyXL ，但请考虑使用我们在评论中讨论的“真实”数据库!

来自 OpenPyXl 文档:

从工作表中读取

from openpyxl import load_workbook
wb = load_workbook(filename='large_file.xlsx', read_only=True)
ws = wb['big_data']

for row in ws.rows:
    for cell in row:
        print(cell.value)

使用上面的方法，您应该能够通过密码检查执行类似的操作:

from openpyxl import load_workbook
wb = load_workbook(filename='userpasslist.xlsx', read_only=True)
ws = wb['userpassworksheet']

for row in ws.rows:
    # assuming 1st column contains user names
    if row[0].value == username:
        # assuming 2nd column contains matching password
        if row[1].value == password:
            print("Success! Password matches! Do something here!")
        else:
            print("booo! Wrong password! Now git' out!")
        break

From the XlsxWriter docs: Writing to a sheet

如何应用此功能:

import xlsxwriter

# Create a workbook and add a worksheet.
workbook = xlsxwriter.Workbook('userpassbook.xlsx')
worksheet = workbook.add_worksheet()

# Some data we want to write to the worksheet.
users = (
    ['user1', 'password'],
    ['user2', 'password'],
    ['user3', 'password'],
    ['user4', 'password']
)

# Start from the first cell. Rows and columns are zero indexed.
row = 0
col = 0

# Iterate over the data and write it out row by row.
for username, password in (users):
    worksheet.write(row, col, username)
    worksheet.write(row, col + 1, password)
    row += 1

workbook.close()