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Commit 890e8fa

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author
Karandeep Grover
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with open("stocks.csv", "r") as f, open("output.csv", "w") as out:
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out.write("Company Name,PE Ratio, PB Ratio\n")
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next(f) # This will skip first line in the file which is a header
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for line in f:
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tokens = line.split(",")
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stock = tokens[0]
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price = float(tokens[1])
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eps = float(tokens[2])
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book = float(tokens[3])
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pe = round(price / eps, 2)
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pb = round(price / book, 2)
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out.write(f"{stock},{pe},{pb}\n")
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‎Basics/Hindi/12_read_write_file/read_write_file_exercise.md‎ renamed to ‎Basics/Exercise/13_read_write_files/read_write_file_exercise.md‎

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## Exercise: Python Read Write File
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1. [poem.txt](https://github.com/codebasics/py/blob/master/Basics/Hindi/12_read_write_file/Exercise/poem.txt) contains famous poem "Road not taken" by poet Robert Frost. You have to read this file in your python program and find out words with maximum occurance.
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1. [poem.txt](https://github.com/codebasics/py/blob/master/Basics/Exercise/13_read_write_files/poem.txt) contains famous poem "Road not taken" by poet Robert Frost. You have to read this file in your python program and find out words with maximum occurance.
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[Solution](https://github.com/codebasics/py/blob/master/Basics/Hindi/12_read_write_file/Exercise/exercise_1_poem.py)
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[Solution](https://github.com/codebasics/py/blob/master/Basics/Exercise/13_read_write_files/exercise_2_stocks.py)
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2. [stocks.csv](https://github.com/codebasics/py/blob/master/Basics/Hindi/12_read_write_file/Exercise/stocks.csv) contains stock price, earnings per share and book value. You are writing a stock market application that will process this file and create a new file
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2. [stocks.csv](https://github.com/codebasics/py/blob/master/Basics/Exercise/13_read_write_files/stocks.csv) contains stock price, earnings per share and book value. You are writing a stock market application that will process this file and create a new file
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with financial metrics such as pe ratio and price to book ratio. These are calculated as,
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```
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pe ratio = price / earnings per share
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|Reliance|22.23|2.25|
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|Tata Steel|4.39|0.68|
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[Solution](https://github.com/codebasics/py/blob/master/Basics/Hindi/12_read_write_file/Exercise/exercise_2_stocks.py)
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[Solution](https://github.com/codebasics/py/blob/master/Basics/Exercise/13_read_write_files/exercise_2_stocks.py)
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‎Basics/Hindi/12_read_write_file/Exercise/exercise_2_stocks.py‎

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