Cara menggunakan SYS.STDIN pada Python

Help on built-in function pow in module math:

pow(...)
    pow(x, y)

    Return x**y (x to the power of y).
(END)

Help on built-in function pow in module math:

pow(...)
    pow(x, y)

    Return x**y (x to the power of y).
(END)

Help on built-in function pow in module math:

pow(...)
    pow(x, y)

    Return x**y (x to the power of y).
(END)

Help on built-in function pow in module math:

pow(...)
    pow(x, y)

    Return x**y (x to the power of y).
(END)

Write, Run & Share Python code online using OneCompiler's Python online compiler for free. It's one of the robust, feature-rich online compilers for python language, supporting both the versions which are Python 3 and Python 2.7. Getting started with the OneCompiler's Python editor is easy and fast. The editor shows sample boilerplate code when you choose language as Python or Python2 and start coding.

OneCompiler's python online editor supports stdin and users can give inputs to programs using the STDIN textbox under the I/O tab. Following is a sample python program which takes name as input and print your name with hello.

import sys
name = sys.stdin.readline()
print("Hello "+ name)

Python is a very popular general-purpose programming language which was created by Guido van Rossum, and released in 1991. It is very popular for web development and you can build almost anything like mobile apps, web apps, tools, data analytics, machine learning etc. It is designed to be simple and easy like english language. It's is highly productive and efficient making it a very popular language.

Loops

1. If-Else:

When ever you want to perform a set of operations based on a condition IF-ELSE is used.

if conditional-expression
    #code
elif conditional-expression
    #code
else:
    #code

Note:

Indentation is very important in Python, make sure the indentation is followed correctly

2. For:

For loop is used to iterate over arrays(list, tuple, set, dictionary) or strings.

Example:

mylist=("Iphone","Pixel","Samsung")
for i in mylist:
    print(i)

3. While:

While is also used to iterate a set of statements based on a condition. Usually while is preferred when number of iterations are not known in advance.

while condition  
    #code 

Collections

There are four types of collections in Python.

1. List:

List is a collection which is ordered and can be changed. Lists are specified in square brackets.

Example:

mylist=["iPhone","Pixel","Samsung"]
print(mylist)

2. Tuple:

Tuple is a collection which is ordered and can not be changed. Tuples are specified in round brackets.

Example:

myTuple=("iPhone","Pixel","Samsung")
print(myTuple)

Below throws an error if you assign another value to tuple again.

myTuple=("iPhone","Pixel","Samsung")
print(myTuple)
myTuple[1]="onePlus"
print(myTuple)

3. Set:

Set is a collection which is unordered and unindexed. Sets are specified in curly brackets.

Example:

myset{"iPhone","Pixel","Samsung"}
print{myset}

4. Dictionary:

Dictionary is a collection of key value pairs which is unordered, can be changed, and indexed. They are written in curly brackets with key - value pairs.

First we need to import sys module. sys.stdin can be used to get input from the command line directly. It used is for standard input. It internally calls the input() method. Furthermore, it, also, automatically adds ‘\n’ after each sentence.

Example: Taking input using sys.stdin in a for-loop

Python3

import sys

for linein sys.stdin:

    if 'q' == sys1

sys2sys3

    sys5sys6sys7sys8

sys5for0for1sys8

Output 

Read Input From stdin in Python using input()

The input() can be used to take input from the user while executing the program and also in the middle of the execution.

Python3

for3

for4

for5= for7for0for9sys8

line1

sys5line3

Output:

Read Input From stdin in Python using fileinput.input()

If we want to read more than one file at a time, we use fileinput.input(). There are two ways to use fileinput.input(). To use this method, first, we need to import fileinput.

Example 1: Reading multiple files by providing file names in fileinput.input() function argument

Here, we pass the name of the files as a tuple in the “files” argument. Then we loop over each file to read it. “sample.txt” and “no.txt” are two files present in the same directory as the Python file.

Python3

import line5

line6for7line8=for0in1in2in3in4

    for linein in9

sys2sys5sys.stdin:2

Output: 

Example 2: Reading multiple files by passing file names from command line using fileinput module

Here, we pass the file name as a positional argument in the command line. fileargument parses the argument and reads the file and displays the content of the file.