Python: trouble editing string in a text file -


so driving me crazy. need take text file containing (all in 1 line)

mmfff m fm fmm fff mmmmmm mfmfmf mmmfff mm fmmmf

and manipulate in program. needs open , read file, edit out spaces, , change letters caps. needs print edited file, count m's , f's , output them percent of whole.

# program determine male female ratio  import math  main = raw_input("enter name of file: ")  inputfile = open(main, 'r+')  gender =(inputfile.read().replace(" ", "").replace("f", "f").replace("m", "m"))  inputfile.close()  inputfile= open(main, 'r+')  inputfile.write(gender)  inputfile.close()  print gender  fletter = 0  mletter = 0  mletter = gender.count('m')  fletter = gender.count('f')  mletter =((mletter*100)/39)*1.0  fletter =((fletter*100)/39)*1.0  print "there are", mletter, " males and", fletter, " females."

i have tried many ways, can't remember them now! issues it's not editing txt file properly, have letters @ end of string somehow. , refuses round math @ end i'm ending 58 , 41 when should 59. , yes did try round function, didn't help.

you have number of issues here:

  1. you're doing integer division, converting floats. fix try: mletter =((mletter*100)/39.0) instead.
  2. by using r+ mode overwrite file you're not erasing old content first. means when first run application remove spaces , overwrite beginning new contents , leave last few letters unchanged. try mode w instead.
  3. no need setting stuff 0 this: fletter = 0 overwrite in next line anyway.
  4. you're not using math module, no need import it.

(the result 58.97435897435898 way, not 59)


-

Popular posts from this blog

c# - ODP.NET Oracle.ManagedDataAccess causes ORA-12537 network session end of file -

overview i want replace oracle.dataaccess orcale. managed dataaccess, opening connection latter throws ora-12537 network session end of file exception. exception message / stack trace {oracleinternal.network.networkexception (0x000030f9): ora-12537 : netzwerksession: dateiende @ oracleinternal.network.readerstream.read(orabuf ob) @ oracleinternal.ttc.orabufreader.getdatafromnetwork() @ oracleinternal.ttc.orabufreader.read(boolean bignoredata) @ oracleinternal.ttc.marshallingengine.unmarshalub1(boolean bignoredata) @ oracleinternal.ttc.ttcprotocolnegotiation.readresponse()} i trying connect oracle 11g database , not have client installed on local machine. working test application (unmanaged) using oracle.dataaccess works fine . using system; using oracle.dataaccess.client; namespace app.odp.unmanaged { internal class program { private static void main(string[] args) { //dummy connection string...
Read more

matlab - Compression and Decompression of ECG Signal using HUFFMAN ALGORITHM -

i want compress , decompress ecg signal stored text message text file , find out file size, cr,prd ratio,and qs. here code compression , decompression of ecg signal using huffman algorithm. i'm trying find out file size, compression ratio,prd ratio,qs. but error i'm getting the ecg file in text format. %clearing variables , screen enter code here clear all; close all; clc; [file1]=uigetfile('*.txt'); %fprintf('enter ecg file name :%s',file1); p=file1; t=sprintf('%s',p); b1=dlmread([file1]); len=length(b1); lead=input('enter lead number :'); %lead=str2double(lead); col2=b1(1:end,lead); e=fix(sqrt(len)); m=1; i=1:e j=1:e g2(i,j)=fix(col2(m)*1000); %amplifying 1000 m=m+1; end end g3=g2; i=1:e j=1:e ...
Read more

utf 8 - split utf-8 string into bytes in python -

i trying split utf-8 string bytes in python 3. problem is, when use bytearray, byte, encode etc functions array size of element 14 bytes, not 1 byte expected. need split text file sequence of bytes , send them byte after byte using sockets. tried this: infile = open (file, "r") str = infile.read() byte_str = bytes(str, 'utf-8') print("size of byte_str",sys.getsizeof(byte_str[0])) print gives me 14, need 1... suggestion? quoting official documentation : sys.getsizeof(object[, default]) return size of object in bytes. object can type of object. built-in objects return correct results, not have hold true third-party extensions implementation specific. only memory consumption directly attributed object accounted for, not memory consumption of objects refers to. if given, default returned if object not provide means retrieve size. otherwise typeerror raised. getsizeof() calls object’s __sizeof__ method , adds ...
Read more