Python open file with password

Содержание

Create a Credential file using Python
Adding a credential file creator to the script
How to open a password protected excel file using python?
Method 1: Using win32com.client
How to Open a Password Protected Excel File Using Python with «Using win32com.client»
Method 2: Using openpyxl with encryption
Step 1: Install Required Libraries
Step 2: Import Required Libraries
Step 3: Open Excel File with Password
Step 4: Save Excel File with Password
Step 5: Read Data from Excel File
Step 6: Write Data to Excel File
Method 3: Using PyXLL with Encrypted Excel
Step 1: Install PyXLL
Step 2: Import the Required Libraries
Step 3: Define the Function to Open the Encrypted Excel File
Step 4: Use the Function to Open the Encrypted Excel File
Step 5: Interact with the Excel Workbook
Method 4: Using pandas with xlrd
Как открыть запароленый файл Excel из python?
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How to open a password protected excel file using python
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Create a Credential file using Python

A credential file is nothing but just a configuration file with a tad bit of encryption and an unseen security structure in the backend. There might be a situation where you might come across these kinds of files while using some kind of cloud platforms. All you do to login to the instance or give the script the permissions to do something without your username and password seems a bit magical but what if you want to do the same? let’s say you have created a script that requires few configurations or credentials for logging in. It is quite irritating for the user to enter the credentials or configurations every time they want to run the code. So what’s the solution? Well, there are many ways to do it but since this is about creating credential files the will use the same method. let your users create a Credentials file or Configurations file that can later be used by the script to get the details it requires. And here’s how to do it.

Adding a credential file creator to the script

Really, it’s as simple as copying the below script and adding it in your package but you need to understand a few things if you are looking to get a custom credential or configuration file for your scripts. First, The below script just accepts the user input and add encryption on a few things and write it to a file. If you are looking to add other data, just add a new variable or write it directly to the file. Second, Encryption here is done using Fernet in the cryptography package. So the key is stored in a .key file and if you do want to some third party to break the encryption, convert the Credentials creator file to .exe or other formats that cannot be read easily.

Note: All the modules used comes built-in with Python, so there is no need to install it externally.

CreateCred.py –

Источник

How to open a password protected excel file using python?

When working with password protected Excel files, it can be challenging to access the data without the password. This can become a bottleneck in the workflow, particularly if the password is not readily available. In Python, there are several methods that can be used to open a password protected Excel file. In this answer, we will look at a few options for opening such files and explore their pros and cons.

Method 1: Using win32com.client

How to Open a Password Protected Excel File Using Python with «Using win32com.client»

Here are the steps to open a password protected Excel file using Python with «Using win32com.client»:

import win32com.client as win32 import os

excel = win32.Dispatch('Excel.Application')

Set the Visible property of the Excel object to False so that Excel is not visible to the user:

Open the password protected Excel file using the Workbooks.Open method and pass the password as a parameter:

wb = excel.Workbooks.Open(os.path.abspath('password_protected.xlsx'), False, True, None, 'password')

cell_value = ws.Range('A1').Value

Here is the complete code:

import win32com.client as win32 import os excel = win32.Dispatch('Excel.Application') excel.Visible = False wb = excel.Workbooks.Open(os.path.abspath('password_protected.xlsx'), False, True, None, 'password') ws = wb.Worksheets('Sheet1') cell_value = ws.Range('A1').Value wb.Close() excel.Quit()

This code will open the Excel file password_protected.xlsx with the password password , access the value of cell A1 in Sheet1 , and then close the file and quit Excel.

Method 2: Using openpyxl with encryption

Here is a step-by-step guide on how to open a password-protected Excel file using Python with openpyxl and encryption.

Step 1: Install Required Libraries

First, you need to install the required libraries. You can install them using pip by running the following command:

pip install openpyxl pywin32

Step 2: Import Required Libraries

Next, you need to import the required libraries. Here is the code:

import win32com.client import openpyxl from openpyxl import Workbook from openpyxl.utils import get_column_letter from openpyxl.styles import Font, Alignment

Step 3: Open Excel File with Password

Now, you need to open the Excel file with the password. Here is the code:

excel = win32com.client.Dispatch("Excel.Application") workbook = excel.Workbooks.Open(filename, False, True, None, password)

Step 4: Save Excel File with Password

If you want to save the Excel file with the password, you can use the following code:

workbook.SaveAs(filename, None, password, None, False, False, 0, True, False, False)

Step 5: Read Data from Excel File

To read data from the Excel file, you can use openpyxl library. Here is the code:

wb = openpyxl.load_workbook(filename, read_only=True, keep_vba=False, data_only=True) ws = wb.active for row in ws.iter_rows(): for cell in row: print(cell.value)

Step 6: Write Data to Excel File

To write data to the Excel file, you can use openpyxl library. Here is the code:

wb = Workbook() ws = wb.active ws['A1'] = 'Hello' ws['B1'] = 'World' wb.save(filename)

That’s it! You now know how to open a password-protected Excel file using Python with openpyxl and encryption.

Method 3: Using PyXLL with Encrypted Excel

PyXLL is a powerful tool that allows you to write Python code that can interact with Excel. It can also be used to open password-protected Excel files. In this tutorial, we will show you how to use PyXLL with Encrypted Excel to open a password-protected Excel file.

Step 1: Install PyXLL

The first step is to install PyXLL. You can do this by running the following command:

Step 2: Import the Required Libraries

Next, we need to import the required libraries. We will be using the win32com.client library to interact with Excel and the pyxll library to use PyXLL.

import win32com.client import pyxll

Step 3: Define the Function to Open the Encrypted Excel File

We will now define a function that will open the encrypted Excel file. This function will take the file path and password as input parameters.

@pyxll.xl_func("string file_path, string password: object") def open_encrypted_excel(file_path, password): xlapp = win32com.client.DispatchEx("Excel.Application") xlapp.DisplayAlerts = False xlwb = xlapp.Workbooks.Open(file_path, False, True, None, password) return xlwb

Step 4: Use the Function to Open the Encrypted Excel File

We can now use the open_encrypted_excel function to open the encrypted Excel file. We will pass the file path and password as input parameters.

xlwb = open_encrypted_excel("C:\\path\\to\\encrypted\\file.xlsx", "password")

Step 5: Interact with the Excel Workbook

We can now interact with the Excel workbook as usual. For example, we can read a cell value using the following code:

value = xlwb.Sheets(1).Range("A1").Value

Method 4: Using pandas with xlrd

To open a password protected excel file using Python, we can use the pandas library with xlrd. Here are the steps to do it:

!pip install pandas !pip install xlrd

import pandas as pd import xlrd

file_path = 'path/to/excel/file.xlsx' password = 'your_password' book = xlrd.open_workbook(file_path, on_demand=True, password=password)

sheet_name = 'Sheet1' df = pd.read_excel(file_path, sheet_name=sheet_name)

import pandas as pd import xlrd file_path = 'path/to/excel/file.xlsx' password = 'your_password' book = xlrd.open_workbook(file_path, on_demand=True, password=password) sheet_name = 'Sheet1' df = pd.read_excel(file_path, sheet_name=sheet_name) print(df)

This code will open the password protected excel file and read the data from the specified sheet using pandas.

Источник

Как открыть запароленый файл Excel из python?

Есть защищенный паролем файл Excel. Пароль известен. Как вызвать subprocess.call (или может быть как-то по другому), что бы запустить файл и он открылся без ввода пароля?
Существует ли простой вариант запуска: команда(путь к файлу, пароль)?
P.S. Рython 3.3, Excel 2010.

Я бы написал мини-скрипт на VB, который открывает файл и сохраняет его без пароля, и вызывал бы этот скрипт из Python (subprocess.call, как Вы и указали).
Вот наглядное описание vb-вызова.

from xlrd import * import win32com.client xlApp = win32com.client.Dispatch("Excel.Application") print "Excel library version:", xlApp.Version filename,password = r"\\HRA\Myfile.xlsx", 'caa team' xlwb = xlApp.Workbooks.Open(filename, Password=password)

Уточнил вопрос. На борту Рython 3.3, Excel 2010.
Немного измененный код (2.7—>3.3) не работает:
import win32com.client
xlApp = win32com.client.Dispatch(«Excel.Application»)
print(«Excel library version:», xlApp.Version)
filename,password = r»d:\Myfile.xlsx», ‘1111’
xlwb = xlApp.Workbooks.Open(filename, Password=password)

Окно с запросом вводом пароля появляется.

Так ошибки и нет. Файл запускается, но с предложением ввода пароля. Если я вручную ввожу пароль, то файл открывается в обычном режиме.
Если в окне ввода пароля нажимаю «OK’, то пишет
Excel library version: 14.0
Traceback (most recent call last):
File «D:/01.py», line 7, in
xlwb = xlApp.Workbooks.Open(filename, Password=password)
File «>», line 8, in Open
pywintypes.com_error: (-2147352567, ‘Ошибка.’, (0, ‘Microsoft Excel’, ‘Неверный пароль. Убедитесь, что отключена клавиша CAPS LOCK и используется правильный регистр.’, ‘xlmain11.chm’, 0, -2146827284), None)
Process finished with exit code 1
Если в окне ввода пароля нажимаю «Отмена», то пишет:
Excel library version: 14.0
Traceback (most recent call last):
File «D:/01.py», line 7, in
xlwb = xlApp.Workbooks.Open(filename, Password=password)
File «>», line 8, in Open
pywintypes.com_error: (-2147352567, ‘Ошибка.’, (0, ‘Microsoft Excel’, ‘Метод Open из класса Workbooks завершен неверно’, ‘xlmain11.chm’, 0, -2146827284), None)
Process finished with exit code 1
Если вручную ввести пароль, то пишет:
Excel library version: 14.0
Process finished with exit code 0