CODEWITHSUNDEEP
pythonc++inputgetchar
miltonbhowmick
miltonbhowmick

Reputation: 481

Is there a built-in function in Python 3 like getchar() in C++?

I want to do user input in python which is similar to getchar() function used in c++.

c++ code:

#include<bits/stdc++.h>

using namespace std;
int main()
{
char ch;
while(1){
    ch=getchar();
    if(ch==' ') break;
    cout<<ch;
}
return 0;
}

Input: stack overflow

Output: stack

In the above code, when a space input from the user than the loop breaks. I want to do this in python using getchar() type function as I used in c++ code.

Upvotes: 15

Views: 42814

Answers (5)

VENOM-InstantDeath
VENOM-InstantDeath

Reputation: 46

This will do the trick. (Probably does not work on Windows)

import sys
import termios

def getchar():
    old = termios.tcgetattr(sys.stdin)
    cbreak = termios.tcgetattr(sys.stdin)
    cbreak[3] &= ~(termios.ECHO|termios.ICANON)
    cbreak[6][termios.VMIN] = 1
    cbreak[6][termios.VTIME] = 0
    termios.tcsetattr(sys.stdin,termios.TCSADRAIN,cbreak)
    char = sys.stdin.read(1)
    termios.tcsetattr(sys.stdin,termios.TCSADRAIN,old)
    return char

if __name__ == '__main__':
    c = getchar()
    print("Key is %s" % c)

Here, the function getchar() prepares standard input to read only one character at a time using cbreak, meaning that you don't have to press enter for getchar() to read a key. This function works with all keys except for the arrow keys, in this case it will capture only the escape character (27)

Upvotes: 3

run
run

Reputation: 21

msvcrt provides access to some useful capabilities on Windows platforms.

import msvcrt
str = ""
while True:
    c = msvcrt.getch() # reads one byte at a time, similar to getchar()
    if c == ' ':
        break
    str += c
print(str)

msvcrt is a built-in module, you can read more about in the official documentation.

Upvotes: 2

CodeIt
CodeIt

Reputation: 3618

Easiest method:

Just use split function

a = input('').split(" ")[0]
print(a)

Using STDIN:

import sys
str = ""
while True:
    c = sys.stdin.read(1) # reads one byte at a time, similar to getchar()
    if c == ' ':
        break
    str += c
print(str)

Using readchar:

Install using pip install readchar

Then use the below code

import readchar
str = ""
while(1):
    c = readchar.readchar()
    if c == " ":
        break
    str += c
print(str)

Upvotes: 17

user2138149
user2138149

Reputation: 16849

Python 3 Solution:

a = input('')        # get input from stdin with no prompt
b = a.split(" ")     # split input into words (by space " " character)
                     # returns a list object containing individual words
c = b[0]             # first element of list, a single word
d = c[0]             # first element of word, a single character
print(d)

#one liner
c = input('').split(" ")[0][0]
print(c)

Upvotes: -1

Mitch
Mitch

Reputation: 3418

Something like this should do the trick

ans = input().split(' ')[0]

Upvotes: 2

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