Automatic String to Number conversion in Python смотреть онлайн

In Python, you often need to convert strings to numbers and vice versa. This tutorial will focus on converting strings to numbers, a process that can be referred to as "string to number conversion." Python provides several built-in functions and methods to perform this conversion automatically. We'll explore different methods and provide code examples to illustrate each approach.
The int() function is used to convert a string to an integer. If the string contains a valid integer, it will be converted. Otherwise, it will raise a ValueError if the string cannot be interpreted as an integer.
The float() function is used to convert a string to a floating-point number (i.e., a decimal number). It works similarly to int(), but it can handle decimal numbers.
The eval() function can be used to convert not only numbers but also more complex expressions within a string to their corresponding numeric values. Be cautious when using eval() with untrusted input as it can execute arbitrary code. It should only be used with trusted or sanitized input.
Converting strings to numbers in Python is a common task, and Python provides simple and straightforward methods to achieve this. The choice between int() and float() depends on the type of number you need, while eval() allows you to handle more complex expressions.
Remember to validate and sanitize your input to ensure that you don't encounter unexpected errors when performing string-to-number conversions, especially when using eval().
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