# importing package
import turtle
 
# move as default in degrees
turtle.left(90)
 
# take value by heading
print(turtle.heading())
 
# set to radians
turtle.radians()
 
# again take value by heading
print(turtle.heading())

90.0
1.5707963267948966

# importing package
import turtle
 
# set to radians
turtle.radians()
 
# turn to left by 90
turtle.left(90)
 
# move forward by 100
turtle.forward(100)