We Keep Coding

how to do loop over the tickers and save result on the dictionary

I’m not so sure how to do the last part which is the dictionary part and ticker part, and also
On
“”file = open("/home/ubuntu/environment/hw5/" + tickers + “.txt”)””"
This line keep showing
TypeError: must be str, not list
Any suggestion on how to fix those or make the code works ?
Here’s my code
import json
def meanReversionStrategy(prices):
total_profit = 0
first_buy = None
buy = 0
for i in range(len(prices)):
if i >= 5:
current_price = prices[i]
moving_average = (prices[i-1] + prices[i-2] + prices[i-3] + prices[i-4] +prices[i-5]) / 5
if current_price < moving_average * 0.95 and buy == 0:
buy = current_price
print("buy at: ",round (current_price,2))
if first_buy is None:
first_buy = buy
elif current_price > moving_average * 1.05 and buy != 0:
print("sell at: ", round(current_price,2))
print("trade profit: ", round(current_price - buy,2))
total_profit = current_price - buy
buy = 0
final_profit_percentage = ( total_profit / first_buy ) * 100
print("First buy: " , round(first_buy,2))
print("Total profit: " , round(total_profit, 2))
print("Percentage return: ", round(final_profit_percentage, 2),"%")
def simpleMovingAverageStrategy(prices):
i = 0
buy = 0
total_profit = 0
first_buy = 0
for p in prices:
if i >= 5:
moving_average = (prices[i-1] + prices[i-2] + prices[i-3] + prices[i-4] +
prices[i-5]) / 5
#simple moving average logic, not mean
if p > moving_average and buy == 0: #buy
print("buying at: ", p)
buy = p
if first_buy == 0:
first_buy = p
elif p < moving_average and buy != 0: #sell
print("selling at: ", p)
print("trade profit: ", p - buy)
total_profit += p - buy
buy = 0
i += 1
final_percentage = (total_profit / first_buy) * 100
print("first buy: ", first_buy)
print("total profit: ", total_profit)
print("final percentage: ", final_percentage, "%")
return total_profit, final_percentage
tickers = ["AAPL1" , "ADBE" , "BA", "CMCSA", "CSCO", "CVS", "GOOG", "TLSYY","TM"]
file = open("/home/ubuntu/environment/hw5/" + tickers + ".txt")
lines = file.readlines()
# print(lines)
prices = []
for line in lines:
prices.append(float(line))
profit, returns = simpleMovingAverageStrategy(prices)
results = {}
results["AAPL1_profit"] =profit
results["AAPL1_returns"] = returns
json.dump(results, open("/home/ubuntu/environment/hw5/results.json", "w") )
Coding Requirements
-Create a function called meanReversionStrategy which takes a list called “prices” as an argument. The function runs a mean reversion strategy, and outputs to the console the buys and sells of the strategy (like you did in HW4). The function returns the profit and final returns percentage.
-Create a function called simpleMovingAverageStrategy which takes a list called “prices” as an argument. The function runs a Simple Moving Average strategy, and outputs to the console the buys and sells of the strategy. The function returns the profit and final returns percentage.
-Create a function called saveResults which takes a dictionary as an argument. Save the dictionary to a json file called “results.json”.
loop through the list of tickers
for ticker in tickers:
-load prices from a file <ticker>.txt, and store them in the results dictionary with the
key “<ticker>_prices”
-call meanReversionStrategy(prices) and store the profit and returns in the results
dictionary with the keys “<ticker>_mr_profit” and “<ticker>_mr_returns”
-call simpleMovingAverageStrategy(prices) and store the profit and returns in the
results dictionary with the keys “<ticker>_sma_profit” and “<ticker>_sma_profit”
with the keys “ticker_mr_profit” and “ticker_mr_returns”
call saveResults(results) and save the results dictionary to a file called results.json

Welcome!
As this is a homework question, I will not solve it for You, but here is my advice for You:
tickers is an array and as your homework description states, You must 'loop through the list of tickers' and open each of them. So how do You loop over tickers?
And reflect about the error. What do You think should be the result of "/home/ubuntu/environment/hw5/" + tickers + ".txt"?

New to python and having trouble figuring out why the deductions are not including the tax in the total

I am new to programming and I am trying to write a program for the python essentials course I am in. It's on Day 1 and I am having trouble figuring out why the Total Deductions will not compute the correct amount. This is the code I wrote:
print("=================DEDUCTIONS=================")
print("SSS: " + sss_contribution)
print("PhilHealth: " + philhealth_contribution)
print("Other Loan: " + housing_loan)
tax_rate = .10
tax_total = int(gross_salary)*int(tax_rate)
print("Tax: " + str(tax_total))
total_deductions = int(sss_contribution) + int(philhealth_contribution) + int(housing_loan) + int(tax_total)
print("Total Deductions: " + str(total_deductions))
net_salary = float(gross_salary) - float(total_deductions)
print("NET SALARY: " + str(net_salary))
I get the correct NET SALARY amount, but the Total Deductions only reflect the total for the SSS, PhilHealth, and Housing. Thank you.

You declared tax_rate as a float, so try:
tax_total = int(gross_salary)*float(tax_rate)
If you declared tax_rate as 5.10, doing an int(tax_rate) returns 5. Wheras doing a float(tax_rate) returns 5.1.
Here in your example you declared tax_rate as 0.10, so your tax_total becomes 0 since int(tax_rate) is 0. Thats why your tax is not included in your calculations
print("=================DEDUCTIONS=================")
sss_contribution = 500
philhealth_contribution = 600
housing_loan = 500.20
gross_salary = 2000
print("SSS: " +str(sss_contribution))
print("PhilHealth: " +str(philhealth_contribution))
print("Other Loan: " +str(housing_loan))
tax_rate = .10
tax_total = int(gross_salary)*float(tax_rate)
print("Tax: " + str(tax_total))
total_deductions = int(sss_contribution) + int(philhealth_contribution) + float(housing_loan) + int(tax_total)
print("Total Deductions: " + str(total_deductions))
net_salary = float(gross_salary) - float(total_deductions)
print("NET SALARY: " + str(net_salary))

My very first python program! An income tax calculator

I am brand new to python and I attempted to make a simple federal income tax calculator. There has to be a far simpler way to accomplish the same task. Here's what I created:
'''
# 2021 income tax calculator
print ('What\'s your yearly income after you deduct all expenses?')
myincome = int(input())
base = (myincome*.1)
e = (max(myincome-9950,0)*.02)
ex = (max(myincome-40525,0)*.1)
ext = (max(myincome-86376,0)*.02)
extr = (max(myincome-164926,0)*.08)
extra = (max(myincome-209426,0)*.03)
extras = (max(myincome-523601,0)*.02)
tax = base + e + ex + ext + extr + extra + extras
print ('You\'re gonna get screwed about~$',str(tax) + ' dollars in Federal income tax')
print ()
while True:
print ('Try Different Income:')
myincome = int(input())
base = (myincome*.1)
e = (max(myincome-9950,0)*.02)
ex = (max(myincome-40525,0)*.1)
ext = (max(myincome-86376,0)*.02)
extr = (max(myincome-164926,0)*.08)
extra = (max(myincome-209426,0)*.03)
extras = (max(myincome-523601,0)*.02)
tax = base + e + ex + ext + extr + extra + extras
print ('You\'re gonna get screwed about~$',str(tax) + ' dollars in Federal income tax')
print ()
continue
'''

Try this code:
# create a dictionary with amounts and rates (the key is the amount, the value is the rate)
stakes = {0: .1, 9950: .02, 40525: .1, 86376: .02, 164926: .08, 209426: .03, 523601: .02}
myincome = input('What\'s your yearly income after you deduct all expenses? ')
while myincome.isnumeric(): # loop ends if entered empty or non-numeric string
myincome = int(myincome)
# a cycle in which key-value pairs (amount-rate) are alternately extracted (unpacked)
# from the dictionary, partial taxes is calculated and the result is summed up
tax = sum(max(myincome - k, 0) * v for k, v in stakes.items())
print(f'You\'re gonna get screwed about~${tax} dollars in Federal income tax')
myincome = input('Try Different Income:')

Finding total and average salaries from 1000 lines of text

I need to write a python program that reads 1000 lines of text and take the total and average of the salaries of each professor category (assistant, associate, full, all faculty). Here is the problem:
A university posts its employee salary at
http://cs.armstrong.edu/liang/data/Salary.txt. Each line in the file
consists of faculty first name, last name, rank, and salary (see
Exercise 13.16). Write a program to display the total salary for
assistant professors, associate professors, full professors, and all
faculty, respectively, and display the average salary for assistant
professors, associate professors, full professors, and all faculty,
respectively.
This is the code I have so far:
import urllib.request
def main():
infile = urllib.request.urlopen('http://cs.armstrong.edu/liang/data/Salary.txt')
s = infile.read().decode().splitlines()
asstTotal = 0
asstCount = 0
asscTotal = 0
asscCount = 0
fullTotal = 0
fullCount = 0
for line in s:
if "assistant" in line:
asstCount += 1
asstTotal += int(float(s[3]))
if "associate" in line:
asscCount += 1
asscTotal += int(float(s[3]))
if "full" in line:
fullCount += 1
fullTotal += int(float(s[3]))
allFacTotal = asstTotal + asscTotal + fullTotal
avgAsst = int(asstTotal / asstCount)
avgAssc = int(asscTotal / asscCount)
avgFull = int(fullTotal / fullCount)
avgAll = int(allFacTotal / 1000)
print("Total assistant professor salary is", asstTotal)
print("Total associate professor salary is", asscTotal)
print("Total full professor salary is", fullTotal)
print("Total faculty salary is", allFacTotal)
print("Average assistant professor salary is", avgAsst)
print("Average associate professor salary is", avgAssc)
print("Average full professor salary is", avgFull)
print("Average faculty salary is", avgAll)
main()
I'm not sure how to get the salaries from the respective professor ranks and totaling and averaging them. Any input would be much appreciated!
Result:
Total assistant professor salary is 24306418
Total associate professor salary is 27235856
Total full professor salary is 27631726
Total faculty salary is 79174000
Average assistant professor salary is 79174
Average associate professor salary is 79174
Average full professor salary is 79174
Average faculty salary is 79174

This can be done to account for any type of rank, by building up a list of pay for each position in a dictionary, then simply dividing the sum by the length.
My example:
import urllib.request
def main():
infile = urllib.request.urlopen('http://cs.armstrong.edu/liang/data/Salary.txt')
s = infile.read().decode().splitlines()
pays = {}
for line in s:
*name, rank, pay = line.split()
pays[rank] = pays.get(rank, []) + [float(pay)]
for rank, sals in pays.items():
avg = sum(sals) / len(sals)
print("{:>10} ({:3}): ${:,.2f}".format(rank.title(), len(sals), avg))
if __name__ == '__main__':
main()
And the output:
Associate (344): $83,849.26
Full (349): $102,229.37
Assistant (307): $65,949.55

import urllib.request
def main():
infile = urllib.request.urlopen("http://cs.armstrong.edu/liang/data/Salary.txt")
asstSalTotal = 0
asstTotal = 0
asscSalTotal = 0
asscTotal = 0
fullSalTotal = 0
fullTotal = 0
for line in infile.readlines():
data = line.decode().split()
designation = data[2]
if designation == "assistant":
asstSalTotal += float(data[3])
asstTotal += 1
elif designation == "associate":
asscSalTotal += float(data[3])
asscTotal += 1
elif designation == "full":
fullSalTotal += float(data[3])
fullTotal += 1
allSalTotal = asstSalTotal + asscSalTotal + fullSalTotal
allTotal = asstTotal + asscTotal + fullTotal
print("Total Salary:\n\tAssistant:\t%d\n\tAssociate:\t%d\n\tFull:\t%d\n\tAll:\t%d\n\nAvg Salary:\n\tAssistant:\t%d\n\tAssociate:\t%d\n\tFull:\t%d\n\tAll:\t%d\n" % (asstSalTotal, asscSalTotal, fullSalTotal, allSalTotal, asstTotal, asscTotal, fullTotal, allTotal))
main()

In python2.7, use urllib2.urlopen and group salaries together by title with a table.
In python3, use urllib.request.urlopen and change print .. to print(..)
import urllib2
rs = urllib2.urlopen('http://cs.armstrong.edu/liang/data/Salary.txt')
title_salaries = {}
for line in rs.read().split("\n"):
_, _, title, salary = line.split(' ')
if not title_salaries.has_key(title):
title_salaries[title] = []
title_salaries[title].append(float(salary))
for title, salaries in title_salaries.items():
print title
print 'avg:', sum(salaries) / len(salaries)
print 'total:', sum(salaries)
print

Aligning Separate Parts of Print

I am trying to align the text in my output.
purch_amt = float(input('Enter Amount of Purchase'))
state_stax = purch_amt * 0.04
county_stax = purch_amt * 0.02
tax = state_stax + county_stax
totalprice = purch_amt + tax
Print("Purchase Price", "= $", %.2f % purch_amt)
Print("State Sales tax", "= $", %.2f % state_stax)
Print("County Sales tax", "= $", %.2f % county_stax)
Print("Total Tax", "= $", %.2f % tax)
Print("Total Price", "= $", %.2f % totalprice)
... and I want it to look like this when it is run.
Purchase Price = $ 100.00
State Sales tax = $ 4.00
County Sales tax = $ 2.00
Total Tax = $ 6.00
Total Price = $ 106.00
The only way I've found to do this is extremely complex for something that should be fairly easy.
Problem solved, Thanks!
purch_amt = float(input('Enter Amount of Purchase'))
state_stax = purch_amt * 0.04
county_stax = purch_amt * 0.02
tax = state_stax + county_stax
totalprice = purch_amt + tax
def justified(title, amount, titlewidth=20, amountwidth=10):
return title.ljust(titlewidth) + " = $ " + ('%.2f' % amount).rjust(amountwidth)
print(justified('Purchase Price', purch_amt))
print(justified('State Sales Tax', state_stax))
print(justified('County Sales Tax', county_stax))
print(justified('Total Tax', tax))
print(justified('Total Price', totalprice))

String ljust, rjust, center are what you want for padding a string like that.
def justified(title, amount, titlewidth=20, amountwidth=10):
return title.ljust(titlewidth) + " = $ " + ('%.2f' % amount).rjust(amountwidth)
print(justified('Parts', 12.45))
print(justified('Labor', 100))
print(justified('Tax', 2.5))
print(justified('Total', 114.95))

You can just use the built-in string formatting:
>>> column_format = "{item:20} = $ {price:>10.2f}"
>>> print(column_format.format(item="Total Tax", price=6))
Total Tax = $ 6.00
...etc.
Breaking this down:
{item} means format the parameter named item
{item:20} means the formatted result should have width 20 characters
{price:>10.2f} means right align (>), width of 10 (10), floating point precision of 2 decimal places (.2f)
Incidentally, you might want to look at the Decimal package for currency work.