How to make user-input parameters using if in python?

Question

understandable versions of Question:

How to detect and get strings inside of parenthesis?
How to detect and get datatypes inside of parenthesis?
How to detect and get strings inside of parenthesis using If?
How to detect and get datatypes inside of parenthesis using if?

example:

x = input("send command(only allow 1 digits of character and only allow A,B<C<D<E<and F)")
if x == "$C A":
    print(x)
elif x == "$C B":
    print(x)
...

6 possibilities(if and elif statements)

tried: using rfind method, rpartition method translate method(translate from parenthesis to curly brackets), used format() method, used str() function

my code(with if statements):

def commandLine():
    c = input()
    if c = "$CR -f a"
        print("you made a file named a")
    elif c = "$CR -f A"
        print("you made a file named A")
...

possibilites: 15,000 or 7,000

lazy code:

def commandLine():
    c = input()
    if c = "$CR -f"
        f = input("filename: ")
        print(f)

possibilites with short code: Infinity(infinite characters can be typed in the f=input() variable)

Your code is hard to read with only 1 space for indentation. Please use the standard 4 spaces. — Barmar, Apr 21 '23 at 20:02
You can also use the `argparse` module to parse strings that look like command line arguments. — Barmar, Apr 21 '23 at 20:03
Your code has many syntax errors that you should fix before addressing the real question: = that should be ==, missing : at the end of if, — Demi-Lune, Apr 21 '23 at 20:16
@Barmar argparse gets arguments from the commandline. im getting arguments from the c=input() variable — imdumb.com, Apr 21 '23 at 20:23
See https://stackoverflow.com/questions/8878478/how-can-i-use-pythons-argparse-with-a-predefined-argument-string — Barmar, Apr 21 '23 at 20:24

score 0 · Accepted Answer · answered Apr 21 '23 at 21:01

0

You can split your input and make if/else statement with every parameter:

def commandLine():
    c = input()
    c = c.split(" ")
    if c[0] == "$CR":
      if c[1] == "-f":
        if c[2]:
          print("you made a file named {}".format(c[2]))
commandLine()

I'm not sure if this is what you were asking but it's what i understood. I hope it helps

Output:

$CR -f A
you made a file named A

answered Apr 21 '23 at 21:01

Rayken

121
4

i have a problem. so when i made a command that writes inside files, it only wrote the "hello," instead of "hello, world" – imdumb.com Apr 21 '23 at 23:27
It this text is at the end of the command line you can use something like this: `" ".join(c[2:])` it will get all the text from the number of command that you put to the end of your command line – Rayken Apr 22 '23 at 00:47
where do i put it? – imdumb.com Apr 22 '23 at 12:44
in this example if you want a multi word name you should put it like this: `print("you made a file named {}".format(" ".join(c[2:])))` i can´t really tell you where to put it whitout looking at your code, but i think this example could help you – Rayken Apr 23 '23 at 21:55

How to make user-input parameters using if in python?

1 Answers1