• Missing comma after dictionary entry
• Confusing assignment operator (=) and comparison operator (==)
• Using Python keyword where unintended*
• Missing parentheses, brackets, or quotes**
• Adding extra parentheses or brackets
• Missing a colon at the end of a for, while, or if statement
• Improper indentation

*Note: The keyword library can be used to check if something is a Python keyword. To demonstrate,

import keyword as kw
kw.iskeyword('class') # returns True

**Note: To initialize a string containing the quote character (e.g. English contractions), you can escape the quote symbol using a backslash:

message = 'can\'t'
print(message) # prints "can't"