def draw_head(settings):
"Draws the head"
fillcolor(HEAD_COLOR)
with restore_state_when_finished():
update_position(HEAD_ORIGIN)
right(settings['head_angle'])
rectangle_from_center(HEAD_WIDTH, HEAD_HEIGHT)
def draw_arm(settings, which_arm):
"""
Draws an arm, starting with the upper arm, then the lower arm, and finally the hand
"""
fillcolor(ARM_COLOR)
with restore_state_when_finished():
update_position(ARM_ORIGIN)
right(90)
shoulder_angle = settings[which_arm + '_arm_shoulder_angle']
right(shoulder_angle)
rectangle_from_side_edge(UPPER_ARM_WIDTH, UPPER_ARM_LENGTH)
fly(UPPER_ARM_LENGTH)
elbow_angle = settings[which_arm + '_arm_elbow_angle']
right(elbow_angle)
rectangle_from_side_edge(LOWER_ARM_WIDTH, LOWER_ARM_LENGTH)
fly(LOWER_ARM_LENGTH)
left(45)
rectangle(HAND_WIDTH, HAND_LENGTH)
def draw_leg(settings, which_leg):
"""
Draws a leg, starting with the upper leg, then the lower leg, and finally the foot.
"""
fillcolor(LEG_COLOR)
with restore_state_when_finished():
update_position(LEG_ORIGIN)
right(90)
hip_angle = settings[which_leg + '_leg_hip_angle']
right(hip_angle)
rectangle_from_side_edge(UPPER_LEG_WIDTH, UPPER_LEG_LENGTH)
fly(UPPER_LEG_LENGTH)
knee_angle = settings[which_leg + '_leg_knee_angle']
right(knee_angle)
rectangle_from_side_edge(LOWER_LEG_WIDTH, LOWER_LEG_LENGTH)
fly(LOWER_LEG_LENGTH)
left(90)
back(LOWER_LEG_WIDTH / 2)
rectangle_from_side_edge(FOOT_WIDTH, FOOT_LENGTH)
def cars_drive():
a = 0
helpers.make_car(canvas, top_left=(a - 250, 50), tag='car1')
helpers.make_car(canvas, top_left=(a + 550, 300), tag='car2')
while a == a:
a = 0
while a < 900:
time.sleep(0.2)
helpers.update_position(canvas, 'car1', x=50, y=0)
helpers.update_position(canvas, 'car2', x=-50, y=0)
gui.update()
a = a + 50
a = 850
while a < 900:
time.sleep(0.2)
helpers.update_position(canvas, 'car1', x=-50, y=0)
helpers.update_position(canvas, 'car2', x=50, y=0)
gui.update()
a = a - 50
def draw_animation(num_frames, sidelen, color, sleeptime):
for i in range(num_frames):
if i == num_frames / 4:
draw_triangle(sidelen, color)
if i == num_frames / 2:
update_position(100, 0)
draw_triangle(sidelen, color)
if i == 3 * num_frames / 4:
update_position(200, 0)
draw_triangle(sidelen, color)
if i == num_frames:
update_position(100, 0)
draw_triangle(sidelen, color)
screen.update()
time.sleep(sleeptime)
clear()
from tkinter import Canvas, Tk
import time
import helpers
gui = Tk()
gui.title('Animation')
canvas = Canvas(gui, width=500, height=500, background='white')
canvas.pack()
########################## YOUR CODE BELOW THIS LINE ##############################
# draw car (and give it a unique tag)
helpers.make_car(canvas, top_left=(0, 50), tag='car1')
# move car 50 pixels to the right:
time.sleep(1)
helpers.update_position(canvas, 'car1', x=50, y=0)
gui.update()
# move car 50 pixels to the right (exact same code):
time.sleep(1)
helpers.update_position(canvas, 'car1', x=50, y=0)
gui.update()
# move car 50 pixels to the right (exact same code):
time.sleep(1)
helpers.update_position(canvas, 'car1', x=50, y=0)
gui.update()
########################## YOUR CODE ABOVE THIS LINE ##############################
# makes sure the canvas keeps running:
canvas.mainloop()
def buy():
"""Buy shares of stock"""
if request.method == "GET":
return render_template("buy.html")
else:
try:
sym = request.form.get("symbol")
shares = int(request.form.get("shares"))
if not sym or not shares:
#If input from has empty fields
raise Exception("One or more Input fields were empty")
if shares <= 0:
#if non negative value was provided
raise Exception("Non positive integer provided.")
#lookup stock price
price = lookup(sym)
if not price:
raise Exception("Couldnt lookup stock price")
else:
price = price["price"]
#retrieve current users id
user_id = session["user_id"]
#calculate total price of transaction and check if user has valid credit
total_price = price * shares
user_credit = float(
db.execute("SELECT cash FROM users WHERE id = :user_id",
user_id=user_id)[0]["cash"])
if (user_credit - total_price) < 0:
raise Exception("Insufficient Balance")
#update users balance and add transaction to buy history table
new_balance = user_credit - total_price
db.execute(
"UPDATE users SET cash = :new_balance WHERE id = :user_id",
new_balance=new_balance,
user_id=user_id)
# check if user already has open positions for stock symbol,
#if yes - increase amount else add new entry to open_positions table
user_position = db.execute(
"SELECT id, shares FROM open_positions WHERE symbol = :symbol AND user_id = :user_id",
symbol=sym,
user_id=user_id)
if user_position:
user_position = user_position[0]
new_total = shares + user_position["shares"]
update_position(db, new_total, price, user_position["id"])
else:
db.execute(
"INSERT INTO open_positions(id, user_id, symbol, price, shares) VALUES (NULL, :user_id, :symbol, :price, :shares)",
user_id=user_id,
symbol=sym,
price=price,
shares=shares)
#create transaction object for template rendering
transaction = {
"type": "bought",
"symbol": sym,
"shares": shares,
"price": price,
"new_balance": usd(new_balance)
}
db.execute(
"INSERT INTO transaction_history(id, user_id, symbol, price, shares, type) VALUES (NULL, :user_id, :symbol, :price, :shares, :_type)",
user_id=user_id,
symbol=sym,
price=price,
shares=shares,
_type="buy")
return render_template("success.html", transaction=transaction)
except Exception as e:
if str(e) in status_codes:
#return exception name and status code if status code for given exception is in status_code dictionary defined at beginning of file
return apology(str(e), status_codes[str(e)])
else:
return apology(str(e))
