Python无法写入循环数据到文件，报错TypeError: write()参数数量错误

Hey there! Let's break down why you're seeing that TypeError and fix the file writing issue so your testing.txt gets populated correctly.

First, the immediate error: TypeError: write() takes exactly one argument (2 given). This comes straight from this line in your code:

outfile.write('results', '/n')

The write() method only accepts a single string argument, but you're passing two here. On top of that, you're writing the literal string 'results' instead of the actual content stored in your results variable, and using /n (forward slash) instead of the proper newline escape sequence \n (backslash).

Here's the corrected code with explanations for each change:

import requests

with open('testing.txt', 'w') as outfile:
    for number in (4,8,5,7,3,10):
        # Format URL cleanly (note: Google's root + number won't return valid pages, adjust this to your actual target URLs)
        url = requests.get(f'https://www.google.com/{number}')
        response = url
        results = response.content
        
        # Print to console for debugging (optional)
        print(results)
        
        # Fix 1: Combine content and newline into one single argument for write()
        # Fix 2: Decode bytes content to a readable string (response.content returns raw bytes)
        # Fix 3: Use correct newline sequence '\n' instead of '/n'
        outfile.write(results.decode('utf-8') + '\n')
        
        # Alternative: Use print() to handle newlines automatically (uncomment if preferred)
        # print(results.decode('utf-8'), file=outfile)

Key Fixes Explained: #

• Single argument for write(): Instead of passing two separate values, combine your content and newline into one string (e.g., results.decode('utf-8') + '\n').
• Decode bytes to string: response.content returns raw binary data. To write it as a readable text string, use .decode('utf-8') (adjust the encoding if you're fetching content that uses a different charset).
• Correct newline sequence: Use \n instead of /n—the backslash tells Python this is an escape sequence for a line break.
• Optional print() method: If you prefer, print(results.decode('utf-8'), file=outfile) works because print() automatically adds a newline at the end, and accepts the file parameter to redirect output to your text file instead of the console.

One quick side note: The URLs you're requesting (https://www.google.com/4, etc.) won't return valid Google pages—Google doesn't structure its URLs this way. Make sure to replace that part with your actual target endpoints if you're testing with real data.

内容的提问来源于stack exchange，提问作者Mia Ella