Holes in the text Add problem to Todo list problem code:holes

1 ImportSYS2 3 4 defcount_holes (letter):5hole_2 = ['A','D','O','P','Q','R']6     ifLetter = ='B':7         return28     elifLetterinchhole_2:9         return1Ten     Else: One         return0 A  -  - defMain (): then =Int (sys.stdin.readline ()) -      forTinchSys.stdin: -num =0 -          forLinchT[:-1]: +num + =count_holes (L) -         PrintNum +  A  atMain ()

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Raw_input () and sys.stdin.readline () differences

Raw_input () does not contain the last \ n line-break symbol, and the latter has

Sys.stdin.readline (). Strip (), no parameters, default strip trailing, newline

. spilt () plus one, according to the space, the input data is divided

Ide

The understanding of Debug

Console input cannot be immediately echoed

Because the pycharm enabled buffering, in order to efficiently

Psyco.full ()

Sometimes it does cause re

Good code indentation and whitespace

Pre-defined way faster

If a in b[]

For loop

No problem, you can loop a string, if you do not want \ n (the subject does not affect the result, but more than once the function call), with [:-1], this: operation is py a great advantage

This idea and commissioning are done independently.

Come on!

Error
Elif (' A ' or ' D ' or ' O ' or ' P ' or ' Q ' or ' R ') = = Letter: Logical judgment is wrong, cannot judge a after, cannot use

　　

　　

Holes in the text Add problem to Todo list problem code:holes