![convert string to number python 3 convert string to number python 3](https://3.bp.blogspot.com/-yB_Cncnf3Ew/U9-Y1U0QItI/AAAAAAAAAfY/0T1lKqDmpyY/s1600/2.png)
Hence, getattr() function can be used to obtain values of different attributes of a class, object, or module. We can obtain the value of any attribute of the myLaptop object. After that, we have extracted the value of the attribute processor using the getattr() function. Then we have created a Laptop object named myLaptop. Here, we have defined a class Laptop with three attributes namely model, RAM, and processor. Let us understand the working of the getattr() function using the following example.
![convert string to number python 3 convert string to number python 3](https://pythonguides.com/wp-content/uploads/2020/06/string-to-datetime.png)
In python, the getattr() function is used to extract the value of an attribute from a class or a module using its name. String To Function Using The getattr() Function In Python Hence, we have converted a string to a function in python, Given that a function with the name of the given string is already defined. After that printTenNumbers() is executed and the numbers are printed. The eval() function first calculated the expression ‘‘ printTenNumbers + “()”’ to ‘ printTenNumbers()’. ‘ printTenNumbers’ and ‘ ()’ separated by + sign to the eval() function. Here, we have declared a function named ‘ printTenNumbers’ that prints the numbers from 1 to 10. For instance, we can evaluate a mathematical expression using the eval() function as follows. The eval() function takes a string expression as input, parses it, and returns the output after evaluating the input expression. But, have you ever tried to convert a string to a function given that a function with the same name has been defined in a different module or class? In this article, we will discuss how we can convert string to function call using different ways in python String To Function Using The eval() Function In Python We also use different functions in our program. Strings are one of the most used data structures when we process text data. String To Function Using The getattr() Function And Class Instance.String To Function Using The getattr() Function And Class Name.String To Function Using The getattr() Function And Module Name.String To Function Using The getattr() Function In Python.String To Function Using The eval() Function In Python.Therefore when we finally print the result after the for loop the output on the console is ‘1 2 3 4 5 6 7 8 9 10’.And the same process goes on until i=10 and finally after the last iteration result=1 2 3 4 5 6 7 8 9 10.Since i=1, on the first iteration finally result=1.On first iteration when the variable i=1,then the variable ,str(i) converts the ‘i’ which is an integer value to a string value.On each for loop iteration this ‘i’ variable is going to take up values from 1 to 10.so range(1,11) is going to generate a list of numbers from 1 to 10.This list of numbers is generated using the range function.The for loop is being used to iterate over a list of numbers.First of all a variable ‘result’ is assigned to an empty string.
#Convert string to number python 3 code#
Here's a line-by-Line explanation of how the above code works:
#Convert string to number python 3 how to#
Here's how to print 1 2 3 4 5 6 7 8 9 10 using a single string: result = "" Print("Hello, I am " + str(age) + " years old") Here's a simple concatenation example: age = 18 The Correct Way to Convert a String to an Integer in Python Here, TypeError: must be str, not int indicates that the integer must first be converted to a string before it can be concatenated. The error that shows up is: Traceback (most recent call last): String = "Hello, I am " + age + " years old"
![convert string to number python 3 convert string to number python 3](https://ber-cititfusil.com/znuvsa/v5yEAqF9s_XCPgzXErIH8wHaEK.jpg)
Programmers coming from other programming languages may attempt to do the following string concatenation, which will produce an error: age = 18 The Wrong Way to Convert a String to an Integer in Python Unlike many other programming languages out there, Python does not implicitly typecast integers (or floats) to strings when you concatenate them to strings.įortunately, Python has a handy built-in function str() which will convert the argument passed in to a string format.