How to get a string from user input in Python?

In Python, there are several ways to input a string from the user. The most common way is to use the built-in function input(). This function allows the user to enter a string, which is then stored as a variable for use by the program.

Example

Here is an example of inputting a string from the user in Python −

# Define a variable to store the input
name = input("Please enter your name: ")
# Print the input
print("Hello, " + name + "! Good to see you.")

Output

The above code generates for us the following Output−

Please enter your name: Max
Hello, Max! Good to see you.

In the above code, we have:

• Define a variable to store the input − name = input("Please enter your name:")

• In this step, a variable named "name" is created to store user input.

• Prompt the user to enter their name − input("Please enter your name:")

• The "input()" function is used to display a message to the user asking them to enter their name. The message "Please enter your name:" is passed as a parameter to the function.

• Store user input in the "name" variable − name = ...

• The result of the "input()" function call is stored in the "name" variable. This means that the user's input is now stored in the "name" variable and is ready for use.

• Print input − print("Hello, " name "! Nice to meet you.")

• In this step, the "print()" function is used to display a message to the user, using the value stored in the "name" variable. The message, "Hello, [name]! Good to see you.", is passed as an argument to the function. The value of "name" is concatenated with the rest of the string using the " " operator.

Remember, the output of the "input()" function is always a string, even if the user input is a number. If you need to use the input as a number, you need to convert it to the corresponding data type (such as int or float).

Example

This is an example of inputting numbers from the user -

# Define a variable to store the input
age = int(input("Please enter your age: "))
# Print the input
print("Wow, you are " + str(age) + " years old!")

Output

The above code generates for us the following Output−

Please enter your age: 24
Wow, you are 24 years old!

From the above code,

• Create a variable named "age" to store user input.

• Pass the message "Please enter your age:" as a parameter to the function.

• Since the "input()" function always returns a string, we need to use the "int()" function to convert the user's input into an integer. This stores user input as numbers instead of strings.

• Store the result of the "int()" function call in the "age" variable.

• The "print()" function is used to display a message to the user, using the value stored in the "age" variable. The message "Wow, you're [age] years old this year!" is passed as a parameter to the function. Use the "str()" function to first convert the value of "age" to a string and then concatenate it with the rest of the string using the " " operator.

You can also specify a default value for the input box in case the user does not provide any input. This can be achieved using the "or" operator and default values ​​−

Example

# Define a variable to store the input
name = input("Please enter your name (or press enter for default): ") or "Max"
# Print the input
print("Hello, " + name + "! Good to see you.")

Output

The above code generates for us the following Output−

Please enter your name (or press enter for default): 
Hello, Max! Good to see you.

In the above code,

• Create a variable named "name" to store the name entered by the user.

• Pass the message "Please enter your name (or press Enter to use the default value) -" as a parameter to the function.

• The or operator is used to set a default value for the name variable. If the user presses the Enter key without entering a name, the input() function returns an empty string. If the user's input is an empty string, the or operator evaluates to the default value "Max".

• Store the result of the input() function call, or the default value "Max" in the name variable.

• Use the name variable to print personalized greetings. Use the operator to concatenate string values ​​to create a single string to be printed.

in conclusion

To summarize, receiving a string from the user in Python is a simple task that can be accomplished by using the ready-made "input()" method. Whether you need to collect a string or a numeric value, converting the input to the appropriate data type and saving it in a variable for future reference is a breeze.

The "input()" method is a convenient tool for getting information from the user and storing it for later use in the code.

The above is the detailed content of How to get a string from user input in Python?. For more information, please follow other related articles on the PHP Chinese website!