python input is number
For Python 3 the following will work. userInput = 0 while True: try: userInput = int(input("Enter something: ")) except ValueError: print("Not an integer!") continue ... ,Python 3 doesn't evaluate the data received with input function, but Python 2's input function does (read the next section to understand the implication). Python ...
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 python input is number 相關參考資料
Python Check User input is a Number or String with Examples ...
https://pynative.com How to check if string input is a number? - Stack Overflow
For Python 3 the following will work. userInput = 0 while True: try: userInput = int(input("Enter something: ")) except ValueError: print("Not an integer!") continue ... https://stackoverflow.com How can I read inputs as numbers? - Stack Overflow
Python 3 doesn't evaluate the data received with input function, but Python 2's input function does (read the next section to understand the implication). Python ... https://stackoverflow.com How to check if user input is a digit - Stack Overflow
i.e. https://docs.python.org/3/library/stdtypes.html#str.isdigit. Here is a ... def get_answer(): num_str = input("Please enter a number: ").lower() if ... https://stackoverflow.com How do I check if raw input is integer in python 2.7? - Stack Overflow
isinstance(raw_input("number: ")), int) always yields False because raw_input return string ... It might return True even int() would raise ValueError for the input. > ... https://stackoverflow.com Checking whether the user input is a number - Stack Overflow
The above approach would fail for negative number input. ... If you are using python 2, consider switching to raw_input() instead of input() . input() accepts any ... https://stackoverflow.com How do I check if input is a number in Python? - Stack Overflow
If the int() call succeeded, decimal is already a number. You can only call .isdigit() (the correct name) on a string: decimal = input() if decimal.isdigit(): decimal ... https://stackoverflow.com Python check for integer input - Stack Overflow
You're using eval , which evaluate the string passed as a Python expression in the current context. What you want to do is just data = raw_input('Enter a number: ... https://stackoverflow.com Python Tip: Validating user input as number (Integer) | 101 Computing
In most of your Python programs you will want to interact with the end-user by asking questions and retrieving user inputs. To do so you can use ... https://www.101computing.net |