[Tutor] how to unique the string

[lina]

On Sun, Oct 23, 2011 at 5:08 PM, Alan Gauld <alan.gauld at btinternet.com> wrote:
> On 23/10/11 09:33, lina wrote:
>
>> I have a further question:
>>
>
>> Welcome anyone help me transform the code to another form.
>
> What form would you like it transformed to?
> A flow chart? Another programming language? A different style of Python
> (Functional programming or OOP maybe?)

Just an updated version. Like the comments you gave.
BTW, thanks for the comments.
>
> I'm not sure what you want here?
> In the meantime I'll offer some general comments:
>
>> #!/usr/bin/python3
>> import os.path
>> mapping={}
>>
>>
>> DICTIONARYFILE="dictionary.pdb"
>> TOBETRANSLATEDFILEEXT=".out"
>> OUTPUTFILEEXT=".txt"
>>
>> def generate_dict(dictionarysourcefile):
>>     for line in open(dictionarysourcefile,"r").readlines():
>
> You don't need the readlines(). Just
> use
>
>    for line in open(dictionarysourcefile,"r"):
>
> That will work just as well.
>
>>         parts=line.strip().split()
>>         mapping[parts[2]]=parts[0]
>>
>>
>> def translate_process(dictionary,tobetranslatedfile):
>>     results=[]
>>     unique={}
>>     for line in open(tobetranslatedfile,"r").readlines():
>>         tobetranslatedparts=line.strip().split()
>>         results.append(dictionary[tobetranslatedparts[2]])
>>     for residue in results:
>>         if residue not in unique:
>>             unique[residue]=1
>>         else:
>>             unique[residue]+=1
>
> You can replace the if/else with the get() metjod of a dictionary:
>
>           unique[residue] = unique.get(residue,0) + 1
>
> get returns the current value and if the value is not there it returns the
> second parameter(zero here)
>
>
>>     for residue, numbers in unique.items():
>>         print(residue,numbers)
>>         with open(base+OUTPUTFILEEXT,"w") as f:
>>             f.write(str(unique))      ########### How can I output the
>> results the same as the print one. Thanks.
>
> create a string before you write it:
>
> mystr = str(residue) + str(numbers)


This part I just wish the output in file like:

{'26SER': 2, '16LYS': 1, '83ILE': 2, '70LYS': 6}

as

26SER 2
16LYS 1
83ILE 2
70LYS 6

still have problem in writing the dict.

Thanks again for your time,

Best regards,

>
> is the simplest way. However you may prefer to format the string in another
> way first. But thats your choice...
>
>> if __name__=="__main__":
>>     generate_dict(DICTIONARYFILE)
>>     for infilename in os.listdir("."):
>>         base, ext =  os.path.splitext(infilename)
>>         if ext == TOBETRANSLATEDFILEEXT:
>>             translate_process(mapping, infilename)
>
> --
> Alan G
> Author of the Learn to Program web site
> http://www.alan-g.me.uk/
>
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