AttributeError: ' dict ' object has no attribute ' item '

This error means that python cannot find the attributes of the corresponding object, and the beginners don’t know enough about the function object, which leads to errors

Original code:

favorite_languages ​​= {
     ' jen ' : ' python ' ,
     ' sarah ' : ' c ' ,
     ' edward ' : ' ruby ' ,
     ' phil ' : ' python ' ,
    }
for name,language in favorite_languages.item():
     print (name.title()+ " 's favorite language is " +language.title()+ " . " )

The text editors we use generally use obvious colors as hints:

 Modified code:

favorite_languages ​​= {
     ' jen ' : ' python ' ,
     ' sarah ' : ' c ' ,
     ' edward ' : ' ruby ' ,
     ' phil ' : ' python ' ,
    }
for name,language in favorite_languages.items():
     print (name.title()+ " 's favorite language is " +language.title()+ " . " )

operation result:

1 Jen ' s favorite language is Python. 
2 Sarah ' s favorite language is C. 
3 Edward ' s favorite language is Ruby. 
4 Phil ' s favorite language is Python. 
5 Sarah ' s favorite language is C.

 Summarize the commonly used Python error types as follows:

• ZeroDivisionError-divide (or modulo) zero (all data types) 
• ValueError-Invalid parameter passed in 
• AssertionError-assertion statement failed 
• StopIteration-the iterator has no more values 
• IndexError-there is no such index in the sequence (index) 
• IndentationError-indentation error 
• OSError-input/output operation failed 
• ImportError——Failed to import module/object 
• NameError-Object not declared/initialized (no attributes) 
• AttributeError- indicating that the object does not have this attribute
• GeneratorExit-an exception occurs in the generator to notify the exit 
• TypeError-invalid operation on the type 
• KeyboardInterrupt-user interrupt execution (usually input ^C) 
• OverflowError-Numerical operation exceeds the maximum limit 
• FloatingPointError-floating point calculation error 
• BaseException-the base class of all exceptions 
• SystemExit-interpreter requests to exit 
• Exception-the base class for general errors 
• StandardError-the base class for all built-in standard exceptions 
• ArithmeticError-the base class for all numerical calculation errors 
• EOFError-there is no built-in input, reaching the EOF mark 
• EnvironmentError-the base class for operating system errors 
• WindowsError-system call failed 
• LookupError-the base class for invalid data query 
• KeyError-there is no such key in the map 
• MemoryError-memory overflow error (not fatal to the Python interpreter) 
• UnboundLocalError-access to uninitialized local variables 
• ReferenceError-Weak reference attempts to access objects that have been garbage collected 
• RuntimeError-general runtime error 
• NotImplementedError-method not yet implemented 
• SyntaxError Python-syntax error 
• TabError-Tab and space are mixed 
• SystemError-general interpreter system error 
• UnicodeError-Unicode related errors 
• UnicodeDecodeError-Unicode decoding error 
• UnicodeEncodeError-Unicode encoding error 
• UnicodeTranslateError-Unicode conversion error

The following are warning types 

• Warning-the base class of warnings 
• DeprecationWarning-warning about deprecated features 
• FutureWarning-a warning that the semantics of the structure will change in the future 
• OverflowWarning-old warning about automatic promotion to long integer (long) 
• PendingDeprecationWarning-warning about the feature will be deprecated 
• RuntimeWarning-warning of suspicious runtime behavior 
• SyntaxWarning-warning of suspicious syntax 
• UserWarning-warning generated by user code

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