Question #1: (use while loop only)
An auto repair shop in Miami estimates that, your vehicle will cost $1689 to repair. Assuming that you could not afford to come up with such amount up front, the repair shop offers to let you pay the total repair cost ($1689) by installment, but at an annual interest rate of 3.00% compounded monthly.
Using a while loop,
Display the remaining balance after each month until pay off
Example/Hint: Balance will be $1,493.22 after 1 month.
Using the output from item 1 above, determine how many months will the vehicle be three quarter
(¾) paid off? Use a print statement to display the message.
Example: "Repair cost total will be 3/4 paid off in 2 months"
I am struggling to figure out how to attack this problem. I'm not sure how to calculate how much each monthly payment will be. There is a hint within the question that in one month, your repair cost goes from $1689 to $1493.22, implying that for the first month, you paid off $195.78 of the repair cost. Any help on how to even start this problem would be much appreciated, thank you.
Your first step is to calculate how much the client is paying per month and with that information apply the "compound interest with monthly withdrawals" formula.
To calculate that, you first calculate how much the balance will be after one month with interest:
monthly_interest_rate = annual_interest_rate / 12
balance += (balance * monthly_interest_rate)
Now subtract the balance after one month gave as a tip from the balance calculated above:
balance_after_one_month = 1493.22
paid_monthly_by_customer = balance - balance_after_one_month
I'm trying to program a salary calculator that tells you what your salary is during sick leave. In Costa Rica, where I live, salaries are paid bi-monthly (the 15th and 30th of each month), and each sick day you get paid 80% of your salary. So, the program asks you what your monthly salary is and then asks you what was the start date and finish date of your sick leave. Finally, it's meant to print out what you got paid each payday between your sick leave. This is what I have so far:
import datetime
salario = float(input("What is your monthly salary? "))
fecha1 = datetime.strptime(input('Start date of sick leave m/d/y: '), '%m/%d/%Y')
fecha2 = datetime.strptime(input('End date of sick leave m/d/y: '), '%m/%d/%Y')
diasinc = ((fecha2 - fecha1).days)
print ("Number of days in sick leave: ")
print (diasinc)
def daterange(fecha1, fecha2):
for n in range(int ((fecha2 - fecha1).days)):
yield fecha1 + timedelta(n)
for single_date in daterange(fecha1, fecha2):
print (single_date.strftime("%Y-%m-%d")) #This prints out each individual day between those dates.
I know for the salary I just multiply it by .8 to get 80% but how do I get the program to print it out for each pay day?
Thank you in advance.
Here's an old answer to a similar question from about eight years ago: python count days ignoring weekends ...
... read up on the Python: datetime module and adjust Dave Webb's generator expression to count each time the date is on the 15th or the 30th. Here's another example for counting the number of occurrences of Friday on the 13th of any month.
There are fancier ways to shortcut this calculation using modulo arithmetic. But they won't matter unless you're processing millions of these at a time on lower powered hardware and for date ranges spanning months at a time. There may even be a module somewhere that does this sort of thing, more efficiently, for you. But it might be hard for you to validate (test for correctness) as well as being hard to find.
Note that one approach which might be better in the long run would be to use Python: SQLite3 which should be included with the standard libraries of your Python distribution. Use that to generate a reference table of all dates over a broad range (from the founding of your organization until a century from now). You can add a column to that table to note all paydays and use SQL to query that table and select the dates WHERE payday==True AND date BETWEEN .... etc.
There's an example of how to SQLite: Get all dates between dates.
That approach invests some minor coding effort and some storage space into a reference table which can be used efficiently for the foreseeable future.
I tried to download the dataset from http://www.msmarco.org/dataset.aspx. Glad to see that the dataset is in JSON.
Now, if you open the dev dataset, you can see that its constituent elements are like:
{"passages": [{"is_selected": 1, "url": "http://www.indeed.com/cmp/Walgreens/salaries", "passage_text": "The average Walgreens salary ranges from approximately $15,000 per year for Customer Service Associate / Cashier to $179,900 per year for District Manager. Average Walgreens hourly pay ranges from approximately $7.35 per hour for Laboratory Technician to $68.90 per hour for Pharmacy Manager. Salary information comes from 7,810 data points collected directly from employees, users, and jobs on Indeed."}, {"is_selected": 0, "url": "http://www.answers.com/Q/What_is_the_average_gross_sales_volume_of_a_single_Walgreen's_Store", "passage_text": "The average revenue in 2011 of a Starbuck Store was $1,078,000, up from $1,011,000 in 2010. The average ticket (total purchase) at domestic Starbuck stores in No … vember 2007 was reported at $6.36. In 2008, the average ticket was flat (0.0% change)."}, {"is_selected": 0, "url": "http://news.walgreens.com/fact-sheets/frequently-asked-questions.htm", "passage_text": "In fiscal 2014, Walgreens opened a total of 184 new locations and acquired 84 locations, for a net decrease of 273 after relocations and closings. How big are your stores? The average size for a typical Walgreens is about 14,500 square feet and the sales floor averages about 11,000 square feet. How do we select locations for new stores? There are several factors that Walgreens takes into account, such as major intersections, traffic patterns, demographics and locations near hospitals."}, {"is_selected": 0, "url": "http://www.babson.edu/executive-education/thought-leadership/retailing/Documents/walgreens-strategic-evolution.pdf", "passage_text": "th store in 1984, reaching $4 billion in sales in 1987, and $5 billion two years later. Walgreens ended the 1980s with 1,484 stores, $5.3 billion in revenues and $154 million in profits. However, profit margins remained just below 3 percent of sales, and returns on assets of less than 10 percent."}, {"is_selected": 0, "url": "http://www.trefis.com/stock/wag/articles/199532/key-trends-driving-walgreens-business/2013-08-07", "passage_text": "The number of Walgreen stores has risen from 5,000 in 2005 to more than 8,000 at present. The average square footage per store stood at approximately 10,200 and we forecast the figure to remain constant over our review period. Walgreen earned $303 as average front-end revenue per store square foot in 2012."}, {"is_selected": 0, "url": "http://www.walgreens.com/storelocator/find.jsp?requestType=locator", "passage_text": "Your Walgreens Store. Select a store from the search results to make it Your Walgreens Store and save time getting what you need. Your Walgreens Store will be the default location for picking up prescriptions, photos, in store orders and finding deals in the Weekly Ad."}], "query_id": 9652, "answers": ["Approximately $15,000 per year."], "query_type": "numeric", "query": "walgreens store sales average"}
{"passages": [{"is_selected": 0, "url": "http://www.breakintobartending.com/how-much-do-bartenders-make/", "passage_text": "A bartender’s income is comprised mostly of tips– 55% to be exact. In some states, employers aren’t even required to pay their bartenders the minimum wage and can pay as low as $2.13 per hour, and they depend on their tips almost entirely. Bartending can be a lot of things. For some it is exciting, for others exhausting. At times there is a lot of fun to be had, at others it is rather dull. But for the most part, bartending is almost always rewarding in the financial sense, as long as you stick with it."}, {"is_selected": 1, "url": "http://www.breakintobartending.com/how-much-do-bartenders-make/", "passage_text": "According to the Bureau of Labor Statistics, the average hourly wage for a bartender is $10.36, and the average yearly take-home is $21,550. Bartending can be a lot of things. For some it is exciting, for others exhausting. At times there is a lot of fun to be had, at others it is rather dull. But for the most part, bartending is almost always rewarding in the financial sense, as long as you stick with it."}, {"is_selected": 0, "url": "http://careerswiki.com/how-much-do-bartenders-make/", "passage_text": "About 551,100 individuals are employed as bartenders, with half of this number working part-time. The average annual salary for bartenders is $19,050 or an equivalent of $9.16 per hour, including tips. No formal training is needed for one to get a job as a bartender as all it takes are good customer service skills and a comprehensive knowledge about beverages and recipes. "}, {"is_selected": 0, "url": "http://www.answers.com/Q/How_much_do_bartenders_in_Las_Vegas_make", "passage_text": "Confidence votes 11. Bartenders in Vegas can make up to $7-$15 wage plus $10-$50 in tips per hour. But that totally depends on personality, gender and outlet. A hot young female can make $1000 a day tending bar in a strip club, but that is very exceptional. A bartender makes as much as a bartender wants to make. I wouldn't say there is a cap on how much a bartender make in one year. If the service is good and the coversation is i … nteresting a bartender can make alot of money. Location is also a big factor."}, {"is_selected": 0, "url": "https://answers.yahoo.com/question/index?qid=20100102233548AAZEutT", "passage_text": "Best Answer: An average bartender makes about...2 to 3 dollars an hour. but all the money is made off tips depending on the popularity of the bar. I used to make $700 to $1000 a night. but that is in Atlanta. If the bar is busy and you are a good bartender you will make quite a bit. I dont know how much, because I live in a town with a population of 2000 so there is not alot going on around here. Im sure the bartenders make a hundred to two hundred a night total (on a good night)...just depends."}, {"is_selected": 0, "url": "https://answers.yahoo.com/question/index?qid=20100102233548AAZEutT", "passage_text": "Report Abuse. no way to tell you how much bartenders make. in wages anything from minimum to $15 an hour. tips, anywhere from $20 to $300 or more a night. depends on a lot of things. those top dollar jobs only come after a lot of experience. If the bar is busy and you are a good bartender you will make quite a bit. I dont know how much, because I live in a town with a population of 2000 so there is not alot going on around here. Im sure the bartenders make a hundred to two hundred a night total (on a good night)...just depends."}, {"is_selected": 0, "url": "http://work.chron.com/much-bartender-make-annually-7503.html", "passage_text": "Pay by Employment Setting. Bartenders who worked in hotels and hotel restaurants generally reported the highest incomes in 2011, an average of $26,180 a year. Bartenders employed in full-service restaurants tended to earn somewhat less, averaging about $22,130 a year. Bartenders employed by bars earned an average of $20,230 per year, and bartenders who worked for civic and social organizations earned an average of $18,970 a year. The median earnings of bartenders during this period were $9.06 an hour and $18,850 a year. Eighty percent of bartenders in the U.S. reported annual incomes of between $16,170 and $31,860."}, {"is_selected": 0, "url": "http://www.celebritynetworth.com/articles/how-much-does/how-much-does-bartender-make/", "passage_text": "Tips make up half or more of bartender's salaries. If a bartender earned $6.00 an hour, their tips generally average out to $12.00 to $18.00 an hour as additional income. A bartender in an average bar will typically earn $15.00 $30.00 an hour between their wages and tips. According to bartending.org, bartenders in a high volume resort or establishment can earn $50,000 to $75,000 per year between hourly wages and tips. Indeed.com 2010 results show bartenders in restaurants at median salary rates can make a good salary per year: Bartender $73,000."}], "query_id": 9653, "answers": ["$21,550 per year", "The average hourly wage for a bartender is $10.36 and the average yearly take-home is $21,550."], "query_type": "numeric", "query": "how much do bartenders make"}
Now these blocks repeat without any enclosing {} and with no comma separating them. Clearly this can't be JSON.
My question is:
Is this really json as the dataset claims to be?
Any library (preferably in python) to parse it to extract all the individual fields.
I tried ijson in python but then this really doesn't look like real json.
This file is made of one JSON document per line: this is JSON Lines.
The file as a whole is not a valid JSON document. You should read line by line and feed each line into a JSON parser:
#!/usr/bin/env python3
from sys import argv
import json
with open(argv[1], "r", encoding="UTF-8") as f:
lines = [ json.loads(line) for line in f ]
Note: Another similar format is JSON-seq documented in RFC7464.
I am query AWS pricing using boto ec2 in python.
Firstly,I am finding all offering instances of particular instance type using get_all_reserved_instances_offerings ,
then for all instances return by above, I am checking amount and fixed price in 'hourly frequency'. I do this by this code:
for ins in each_ins.recurring_charges:
if ins.frequency == 'Hourly':
print float(ins.amount)
print float(each_ins.fixed_price)
each_ins.fixed_price prints upfront correctly
"d2.2xlarge": 3844.0,
"m3.2xlarge": 1961.0,
it shows correct price as shown in picture with red mark:
But ins.amount prints:
"d2.2xlarge": 0.438,
"m3.2xlarge": 0.248,
I think it should be 0.8768 as shown in above picture with green mark.
The values in the green box are the overall effective cost of the instances per hour over the year (i.e. accounting for the per hour charge over the year plus the initial up-front cost spread over the year.)
However the ins.amount value is the cost charged per hour each month, ignoring the initial up-front cost. Roughly calculating over a month from the monthly cost gives an hourly cost of ~0.444, pretty much corresponding to the values you're seeing.
AWS says the following with respect to the continuing monthly charges:
*This is the average monthly payment over the course of the RI term. For each month, the actual monthly payment will equal the actual number of hours in that month multiplied by the hourly usage rate. The hourly usage rate is equivalent to the total average monthly payments over the term of the RI divided by the total number of hours (based on a 365 day year) over the term of the RI.
I have a CSV file in which I am trying to convert the date column to dd/mm/yyyy format using the below code but I am still struggling with unconverted data remains.
A few sample data-records from the CSV-file
hotel,author,review,date,Overall,Value,Rooms,Location,Cleanliness,Check in/front desk,Service,Business,r9
in,everywhereman2 ,Old seattle getaway This was Old World Excellence at it's best.THIS is the place to stay at when visiting the historical area of Seattle. Your right on the water front near the ferry's and great sea food restrauntsand still with'in walking distance for great blues and jazz music. The staff for this hotel are excellentthey make you feel right at home. The breakfast was great.We did'nt have to travel far to have a good cup of JOE and a light meal to start our adventurous day off into one of the most beautifull city's in america. This hotel is in an area that makes it easy to get to any place you want to go and still find your way back I highly recomend this hotel for your next visit to seattle. ,Jan 6 2009 ,5,5,5,5,5,5,5,5,
in,RW53 ,Location! Location? view from room of nearby freeway ,Dec 26 2008 ,3,4,3,2,4,3,-1,-1,
Can you, please, help me to point out my mistake?
I am reading the file in RSS and then:
import time
for end_date in rss['date']:
end_date = end_date.split(" ")
end_date[-1] = end_date[-1][:4]
end_date = " ".join(end_date)
conv = time.strptime( end_date,"%b %d %Y" )
time.strftime( "%d/%m/%Y", conv )
rss['date']
Thank you in advance.
I just tried your data and the following worked for me without having to do post-processing:
In [17]:
df =pd.read_csv(r'c:\data\out.csv', parse_dates=['date'])
df.dtypes
Out[17]:
hotel object
author object
review object
date datetime64[ns]
Overall int64
Value int64
Rooms int64
Location int64
Cleanliness int64
Check in/front desk int64
Service int64
Business int64
r9 object
dtype: object