raw-input

Is there a method that I can use to check if a raw_input is an integer? I found this method after researching in the web: print isinstance(raw_input("number: ")), int) but when I run it and input 4 for example, I get FALSE . I'm kind of new to python, any help would be appreciated. isinstance(raw_input("number: ")), int) always yields False because raw_input return string object as a result. Use try: int(...) ... except ValueError : number = raw_input("number: ") try: int(number) except ValueError: print False else: print True or use str.isdigit : print raw_input("number: ").isdigit() NOTE The

I am trying to mask what the user types into IDLE with asterisks so people around them can't see what they're typing/have typed in. I'm using basic raw input to collect what they type. key = raw_input('Password :: ') Ideal IDLE prompt after user types password: Password :: ********** Michael L Depending on the OS, how you get a single character from user input and how to check for the carriage return will be different. See this post: Python read a single character from the user On OSX, for example, you could so something like this: import sys, tty, termios def getch(): fd = sys.stdin.fileno()

Say I want to use raw_input like this: code = raw_input("Please enter your three-letter code or a blank line to quit: ") under: if __name__=="__main__": How can I let it repeat multiple times rather than just once every time I run the program? Another question is to write what code can satisfy the condition "or a blank line to quit (the program)". best: if __name__ == '__main__': while True: entered = raw_input("Please enter your three-letter code or leave a blank line to quit: ") if not entered: break if len(entered) != 3: print "%r is NOT three letters, it's %d" % (entered, len(entered))

i know i can do this to get the effect of tab completion in python sure. import readline COMMANDS = ['extra', 'extension', 'stuff', 'errors', 'email', 'foobar', 'foo'] def complete(text, state): for cmd in COMMANDS: if cmd.startswith(text): if not state: return cmd else: state -= 1 readline.parse_and_bind("tab: complete") readline.set_completer(complete) raw_input('Enter section name: ') I am now interested in doing tab completion with directories. (/home/user/doc >tab) How would i go about doing such a task? Here is a quick example of how to perform incremental completion of file system paths