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In Python, Strings are arrays of bytes representing Unicode characters. Although Strings are container type objects, like lists, you cannot append to a string. If you try to call the append() method on a string to add more characters, you will raise the error...

If you try to call a tuple object, you will raise the error "TypeError: 'tuple' object is not callable". We use parentheses to define tuples, but if you define multiple tuples without separating them with commas, Python will interpret this as attempting to call a...

We can measure temperature using two units: Celsius and Fahrenheit. We can convert temperature from degrees Celsius to degrees Fahrenheit using a formula. 12 degrees Celsius is equal to 53.6 degrees Fahrenheit. This tutorial will go through how to convert between the...

In Python, we can only convert specific string values to float. If we try to convert an invalid string to a float, we will raise the ValueError: could not convert string to float. To solve this error, ensure you strip the string of invalid characters like commas,...

If you try to access a closed file, you will raise the ValueError: I/O operation on closed file. I/O means Input/Output and refers to the read and write operations in Python. To solve this error, ensure you put all writing operations before closing the file. This...

The error TypeError: unhashable type: ‘numpy.ndarray’ occurs when trying to get a hash of a NumPy ndarray. For example, using an ndarray as a key in a Python dictionary because you can only use hashable data types as a key. We can use the update() method to...

The error TypeError: unhashable type: 'list' occurs when trying to get a hash of a list. For example, using a list as a key in a Python dictionary will throw the TypeError because you can only use hashable data types as a key. To solve this error, you can cast the...