Python新手求助：如何读取JSON键值并无格式输出词典内容

Hey there! Let's break down what's going wrong and fix this step by step.

What's Causing the KeyError? #

Your error comes from this line: currentword[search]['English Word', 'Definition', 'Use case example']. Python dictionaries don't let you use a tuple of multiple keys to fetch values all at once—it treats ('English Word', 'Definition', 'Use case example') as a single, non-existent key in your JSON, hence the KeyError.

And to confirm your understanding: Yes, "Bonjour" is a top-level key in your JSON, and it maps to a sub-dictionary where "English Word", "Definition", etc., are all valid keys. You got that part right!

Fixing the Code & Formatting Output #

We'll first grab the sub-dictionary for your target word, then loop through the fields you want to display, pulling each key-value pair and formatting it cleanly (no JSON brackets or quotes in sight).

Here's the corrected, full code example:

import json

search = "Bonjour"  # User's input word

# Load your JSON file
with open("your_dictionary_file.json", "r") as data:
    currentword = json.load(data)

# Get the sub-dictionary for the searched word
target_entry = currentword[search]

# List of fields you want to show
desired_fields = ['English Word', 'Definition', 'Use case example']

# Loop through fields and print in your desired format
for field in desired_fields:
    # Optional: Add a check to avoid errors if a field is missing
    if field in target_entry:
        print(f"{field} - {target_entry[field]}")
    else:
        print(f"{field} - No data available")

What This Does #

• currentword[search] grabs all the definition data for "Bonjour" (that inner dictionary from your JSON).
• We loop through your list of desired fields, pulling each value from the sub-dictionary one by one.
• The f-string f"{field} - {target_entry[field]}" formats the output exactly how you want it: clean, human-readable text without any JSON syntax.

Bonus: Robustness for Missing Fields #

The if field in target_entry check is a nice touch for a beginner project—it prevents your code from crashing if some word in your dictionary is missing a field (like no "Use case example"), and instead shows a friendly fallback message.

内容的提问来源于stack exchange，提问作者Flexy