A list is an R-object that can have a wide range of different items inside of it, including vectors, functions, and even another list.
The head() function lets you display the first observations in a data frame. The method tail() prints the final observations in your data collection in a manner similar to that. Both head() and tail() print a top line called the 'header', which contains the names of the distinct variables in your data collection. The R language's transform() function is used to alter data. The first parameter is transformed into a data frame. A suitable variable name comprises of letters, numbers and the dot or underline characters. The variable name does not begin with a number but rather with a letter or a dot.
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Answer:
def move_to_row(num_circle):
x_value = -((num_circle*50)/2)
y_value = -250 +(50*row_value)
penup()
setposition(x_value,y_value)
pendown()
def draw_circle_row(num_circle):
for i in range(num_circle):
endown()
circle(radius)
penup()
forward(diameter)
#### main part
speed(0)
radius = 25
diameter = radius * 2
row_value = 1
num_circle = int(input("How many circle on the bottom row? (8 or less): "))
penup()
for i in range(num_circle):
move_to_row(num_circle)
row_value=row_value+1
draw_circle_row(num_circle)
num_circle=num_circle-1
