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+--- Thread: Calculation Inside Dictionary Error (/thread-17732.html)
Calculation Inside Dictionary Error - prophet11 - Apr-22-2019
Dear Collegues,
Thank you in advance for your help. My code is not generating the profitability of this calculation:
Current Value - Purchase Price X No of Shares for my Dictionary.
Any support is highly appreciated!
mydata = {'Stock1': [125, 772.88, 941.53],
'Stock2': [85, 56.60, 73.04],
'Stock3': [400, 49.58, 55.74],
'Stock4': [235, 54.21, 65.27],
'Stock5': [150, 124.31, 172.45]}
headers = ["Stock Symbol", "No Shares", "Purchase Price", "Current Value"]
headers1 = ["Stock Symbol", "No Shares", "Earnings/Loss"]
separator1 = '+----------------+-------------+------------------+-----------------+'
separator2 = '+================+=============+==================+=================+'
print("\nStock Earnings/Losses ")
print(separator1)
print('| {:14} | {:11} | {:15} |'.format(*headers1))
print(separator2)
for element in mydata:
s = (element[3] - element[2]) * element[1]
print('| {:14} | {:11} | ${:14,.2f} |'.format(element[0], element[1], s))
print(separator2)Output:Traceback (most recent call last):
File "<input>", line 18, in <module>
TypeError: unsupported operand type(s) for -: 'str' and 'str'
Stock Earnings/Losses
+----------------+-------------+------------------+-----------------+
| Stock Symbol | No Shares | Earnings/Loss |
+================+=============+==================+=================+RE: Calculation Inside Dictionary Error - ichabod801 - Apr-22-2019
Iterating through a dictionary iterates through it's keys. To iterate through it's values, use
for value in mydict.values():. To iterate through both, use for key, value in mydict.items():.
RE: Calculation Inside Dictionary Error - prophet11 - Apr-22-2019
Dear Ichabod801,
Thank you for replying. Honestly, I'm a bit tense with this calculation. I just cannot figure out how to fix it.
Any extra mile support is highly appreciated.
[/output]
RE: Calculation Inside Dictionary Error - perfringo - Apr-22-2019
Just test what ichabod801 wrote:
In [1]: mydata = {'Stock1': [125, 772.88, 941.53],
...: 'Stock2': [85, 56.60, 73.04],
...: 'Stock3': [400, 49.58, 55.74],
...: 'Stock4': [235, 54.21, 65.27],
...: 'Stock5': [150, 124.31, 172.45]}
In [2]: for element in mydata:
...: print(element)
...:
Stock1
Stock2
Stock3
Stock4
Stock5
In [3]: for element in mydata:
...: print(element[3], element[2], element[1])
...:
c o t
c o t
c o t
c o t
c o tSo you accessing indexes on keys, not values. Follow ichabod801 advice and you are good to go.