Python字典操作代码出现SyntaxError，请求排查语法错误

Hey there! Let’s break down why you’re hitting that syntax error and fix it up.

The problem is actually on line 3 of your code—you’re missing a closing parenthesis for the print statement. Take a look at this line:

print('n\Keys:',dict.keys()

Without that final ), Python’s interpreter thinks you’re still writing the print function when it reaches the del line next. That’s why the error points to line 4—it’s confused about where the previous statement ends. Also, I noticed a tiny typo in your newline character (n\ instead of \n) on that same line, which would have messed up your output formatting.

Here’s the corrected code with both fixes:

dict = {'name':'Bob','ref':'Python','sys':'Win'}
print('\nReference:', dict['ref'])
print('\nKeys:', dict.keys())  # Added closing ) and fixed newline sequence
del dict['name']
dict['user'] = 'Tom'
print('\nDictionary:', dict)
print('\nIs There A name Key?:', 'name' in dict)

When you run this, you’ll get the expected output:

Reference: Python

Keys: dict_keys(['name', 'ref', 'sys'])

Dictionary: {'ref': 'Python', 'sys': 'Win', 'user': 'Tom'}

Is There A name Key?: False

Quick tip: Missing parentheses are super common, even for experienced devs. Using a code editor with real-time syntax highlighting (like VS Code, PyCharm, or even IDLE) will catch these issues right away, saving you time debugging.

内容的提问来源于stack exchange，提问作者Yousif Ragab