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#1
September 19th, 2013, 03:06 AM
 ChristopherL
Contributing User

Join Date: Jun 2013
Posts: 40
Time spent in forums: 14 h 8 m 12 sec
Reputation Power: 1
If statement

Hi there, I am having some trouble with an if statement..
I don't know if I am using the "or" "and" wrong maybe? but I dont get any errors it just doesn't use the if properly..

I want it to check the following:

if marginInSEK < float(NegativeMarginThreshold) or marginInSEK > float(ExcessiveMarginThreshold) AND abs(BPS) > float(BPSThreshold)..

I mean that either smaller then negative or higher then excessive, but it has to have a higher absolute BPS then the threshold..

Code:
```for row in dealList:
marginInSEK = float(row['DEAL_MARGIN'])*float(fxRatesDict[row['COUNTER_CCY']])
BPS = float(row['DEAL_MARGIN']) / float(row['COUNTER_AMT']) * 100
if marginInSEK < float(NegativeMarginThreshold) or marginInSEK > float(ExcessiveMarginThreshold) and abs(BPS) > float(BPSThreshold):
marginSEKDict[row['DEAL_NO']] = [row['MARGIN_BRANCH_ID'],
float(row['DEAL_MARGIN'])*float(fxRatesDict[row['COUNTER_CCY']])]
dealDict[row['DEAL_NO']] = row```

values

Code:
```row = dealDict[key]

ExcessiveMarginThreshold = 50000 # is SEK
NegativeMarginThreshold  = -100 # is SEK
BPSThreshold = 0.3 # limit for BPS```

Am I using the right requirements?

#2
September 19th, 2013, 07:31 AM
 ChristopherL
Contributing User

Join Date: Jun 2013
Posts: 40
Time spent in forums: 14 h 8 m 12 sec
Reputation Power: 1
Code:
`if abs(BPS) > float(BPSThreshold) and (marginInSEK < float(NegativeMarginThreshold) or marginInSEK > float(ExcessiveMarginThreshold)):`

SOLVED

#3
September 19th, 2013, 08:37 AM
 b49P23TIvg
Contributing User

Join Date: Aug 2011
Posts: 4,150
Time spent in forums: 1 Month 3 Weeks 2 Days 8 h 10 m 11 sec
Reputation Power: 455
I don't rely on remembering the precedence rules for comparisons and the Boolean logical operators. I do parenthesize expressions involving operators beyond the scope of grade school algebraic precedence. (Back when I attended grade school. We're talking additions, multiplications, and powers.)

Executable Iverson notation, APL and in it's final dialect named j processes noun verb sequences from right to left. There are no other rules to remember about that.
__________________
[code]Code tags[/code] are essential for python code!

#4
September 19th, 2013, 05:36 PM
 dwblas
Contributing User

Join Date: May 2009
Posts: 412
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Reputation Power: 32
Quote:
 Originally Posted by b49P23TIvg I don't rely on remembering the precedence rules for comparisons and the Boolean logical operators. I do parenthesize expressions
+1 Makes live simpler.

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