Converting string data to float type is a common requirement in programming, especially when working with numerical data. In Python, there is a built-in function that allows us to achieve this effortlessly – the float() function.
To convert a string to a float, we simply need to pass the string as an argument to the float() function. Let’s take a look at an example:
string_num = "3.14" float_num = float(string_num) print(float_num) # Output: 3.14
In the code snippet above, we have a variable
string_num which contains the string representation of the number “3.14”. By applying the float() function on this variable and assigning it to
float_num, we successfully convert the string into its equivalent float value.
- The float() function can handle both integer and floating-point strings.
- If you try to convert a non-numeric string that does not resemble a number, a ValueError will be raised.
The float() function can also be used without assigning it to any variable. In such cases, it directly returns the converted float value. Here’s an example:
result = float("7.5") + float("2.5") print(result) # Output: 10.0
In this example, we directly use the float() function inside an arithmetic expression, converting the strings “7.5” and “2.5” to float values and then adding them together.
To summarize, the float() function is the go-to solution for converting string data to the float type in Python. It provides a simple and efficient way to perform this conversion, making it an essential tool in any programmer’s arsenal.