value_str = 'Finxter' # Text String Object If you try to typecast a text string to a float object, it will lead to ValueError. ⚠️ Caution: You can only convert a numeric-string, i.e., a string containing only numbers. Value_int = int(value_str) # converting to float ? Thus, you can simply convert a string value to an integer value using int('value').Įxample: value_str = '100' # String object Returns an integer number after converting the input argument value using its required _int_() method for the conversion. The base argument determines how the string argument is interpreted. If you set the base, the value argument must be a string. The value object must have an _int_() method that returns the associated integer number-otherwise a TypeError will be raised.Īn optional integer argument base to define the base of the numerical system in the value argument. ArgumentĪ Python object to be converted into an integer number. The int() function on a float argument rounds down to the closest integer. For example, int('42') converts the string value '42' into the integer number 42. Python’s built-in int(value) function converts the argument value to an integer number. Now that you know what is type conversion in Python, let us proceed with our topic – “How to convert a string object to a int object?” Python int() Print("Type of value_str: ", type(value_str)) Print("Type of value_int: ", type(value_int)) ✎ Note: Explicit type conversion is also known as typecasting.Įxample: The following example how you can typecast an integer to a string. You have to use built-in functions like int(), str(), float(), etc., to perform explicit type conversion. The type of conversion in which the user has to explicitly convert an object of one type to another type is known as explicit type conversion. Print("data type of result: ", type(result))ĭata type of result: ♻️ Explicit Type Conversion When Python automatically converts one data type to another data type without the involvement of user, it is known as implicit type conversion.Įxample: In the following code Python implicitly promotes a lower data type ( integer) to a higher data type ( float). ✎ The process of converting an object of a particular data type into another type is known as type conversion. In the second example, we got an input from a user, converted it to an integer, and then performed our mathematical operation to print their current age.Summary: To convert a string object to integer object use the float(string_input) method which typecasts the string input to a floating-point value.īefore learning how to convert a string object to a int object, let us understand what is type conversion in Python. We first saw an example where we had to use the int() function to convert a string to an integer and perform a simple operation with the value. In this article, we learned how to convert strings to integers in Python. You can copy the code and play around with it. With the integer value, we were able to subtract the user's birth year from the current year to get and print their actual age. We then requested the user's birth year: userBirthYear = input("What is your birth year?")Īfter that we converted the user's birth year (which was returned to us as a string) to an integer using the int() function. With this, we were able to get and store the current year in a variable. In the code above, we first imported the date class from the datetime module. UserAge = currentYear - convertUserBirthYear UserBirthYear = input("What is your birth year?")ĬonvertUserBirthYear = int(userBirthYear) In the next example, similar to the last one, we will get a user's input and perform some calculations to display their age. We converted the userAge variable and stored it in a variable called convertUserAge and then performed our operation again to get the expected result. Now let's convert the variable to an integer and perform the same operation: userAge = "10" In the example above, we are adding 8 to the userAge variable which is a string – but this shows an error because the interpreter assumes we are trying to add (concatenate) two strings. # TypeError: can only concatenate str (not "int") to str Here is an example to help you understand: userAge = "10" So we pass the string to be converted as an argument in the int() function. Here is what the syntax looks like: int(string_value) In Python, we can use the built in int() function to convert strings to integers. In this article, we'll see how to convert a string to an integer in Python with some examples. In both cases, the values returned are strings so we cannot perform mathematical operations with them as this will throw an error our way. Similarly, there are cases where you might want to perform mathematical operations on string values. When creating a program, you may need to get numerical input from users and perform various mathematical operations on the value.
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