8 Python Setup ?

8.1 A normal R code chunk

library(reticulate)
x = 42
print(x)

## [1] 42

In the following chunk, the value of x on the right hand side is 42, which was defined in the previous chunk.

x = x + 12
print(x)

## [1] 54

This works fine and as expected.

x = 42 * 2
print(x)

## 84

The value of x in the Python session is 84. It is not the same x as the one in R.

x = x + 18 
print(x)

## 102

Retrieve the value of x from the Python session again:

py$x

## [1] 102

Assign to a variable in the Python session from R:

py$y = 1:5

See the value of y in the Python session:

print(y)

## [1, 2, 3, 4, 5]

You can draw plots using the matplotlib package in Python.

import matplotlib.pyplot as plt
plt.plot([0, 2, 1, 4])
plt.show()