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Tuesday, January 24, 2017

How to run a python class, and ow to run R script on linux

Here is a python class:



    class Student:
         def   __init__(self, name, age):
                 self.name=name
                 self.age=age
         def   say_hello(self):
                print(self.name, "say hello")



And, to run it, type the following in the same program:

alice=Student("Alice", 16)
alice.say_hello()

Do not forget the parenthesis.



Save the program as python1.py

And on linux run:

python python1.py

And you will see on the screen:

('Alice', 'say hello')



Here is another example:


class Base1:
def __init__(self,x,y):
self.x=x
self.y=y
def add1(self):
z=self.x+self.y
print(z)

def main():
foo=Base1(1,2)
foo.add1()

if __name__=="__main__":
main()

And you will see 3 was printed on screen.



To run an R program on linux, write an R program and save as rprog1.R


a=c(1,2,3)
for ( i in 1:3)
{ print(i)}

And run Rscript rprog1.R on linux, you will see:
[1] 1
[2] 2
[3] 3




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