[Solved] Create or open file in python [closed]

PEP8 suggests you to use: with open(‘test.txt’, ‘a+’) as f: f.write( “Your new content” ) The with statement is better because it will ensure you always close the file, even if an exception is raised. Example adapted from: http://docs.python-guide.org/en/latest/writing/style/#pep-8 solved Create or open file in python [closed]

[Solved] Read file with floats, calculate size, max, min, mean, median and standard deviaton in C [closed]

float x,i=~(257<<23),a,s,t;main(int n,char**f){a=-i;f=fopen(f[1],”r” );for(n=0;fscanf(f,”%f”,&x)>0;n++,s+=x,x<i?i=x:0,x>a?a=x:0,t+=x*x); printf(“%d %f %f %f %f\n”,n,a,i,s/n,sqrtf(t/n));} Sorry for the long code. Didn’t have time to make it shorter. 1 solved Read file with floats, calculate size, max, min, mean, median and standard deviaton in C [closed]

[Solved] Want to read sequential lines in a file and do some mathematical calculation [closed]

Even though 5 persons down voted my question, I found my on way to solve the problem. Here is the code which I used. It is written in Python. enter codefrom numpy import * from math import * import operator f = open(‘Data_Genergy_26.txt’, ‘r’) lines = f.readlines() # initialize some variable to be lists: r … Read more

[Solved] java.io.FileNotFoundException: /app.properties: open failed: EROFS (Read-only file system)

try to use “android.permission.WRITE_INTERNAL_STORAGE” insert it to AndroidManifest.xml example’s below: <?xml version=”1.0″ encoding=”utf-8″?> <manifest xmlns:android=”http://schemas.android.com/apk/res/android” package=”com.megazy.android” android:versionCode=”1″ android:versionName=”1.0″ > <uses-sdk android:minSdkVersion=”15″ android:targetSdkVersion=”17″ /> <uses-permission android:name=”android.permission.INTERNET” /> <uses-permission android:name=”android.permission.WRITE_INTERNAL_STORAGE” /> 2 solved java.io.FileNotFoundException: /app.properties: open failed: EROFS (Read-only file system)

[Solved] Matlab spilt one txt file to several files

This solution below should do the trick (at least it does for the simplified version you put above. fi = fopen(‘myFile.txt’,’r’); fileCount = 1; fo = fopen([‘output’,num2str(fileCount),’.txt’],’w’); header = fgets(fi); fprintf(fo,header); tline = header; first = true; mark_index = 8; while ischar(tline) if (~first) values = cell2mat(textscan(tline,’%f ‘)); if values(mark_index) == 1 fclose(fo); fileCount = … Read more

[Solved] Java Value must Be Between 0 and 100

The problem you are experiencing is with this piece of code: int percent = (totalDataRead * 100) / filesize; Download.status.setText(totalDataRead / 1024 + “kb/” + filesize / 1024 + “kb”); setProgress(percent); Your value for percent must be outside the range 0…100 as the exception message is coming from the setProgress method: http://docs.oracle.com/javase/7/docs/api/javax/swing/SwingWorker.html#setProgress(int) Note: IllegalArgumentException – … Read more

[Solved] Search Student in File

You are reading lines from the file and assigning its content to str, but you never do something with this value. Also, Student seems to be empty. Supposing your file includes only the ID of the student: BufferedReader read = new BufferedReader(new FileReader(file)); String str; while((str=read.readLine())!=null) { // Your constructor assigns str to ID property … Read more

[Solved] I am making a visual C# winform application. I want to store data in it [closed]

To create files, you will be using the System.IO.File namespace. This gives you access to methods such as Create(), CreateText(), WriteAllBytes(). Which method you use will depend on what type of data you are using. To save the file in your application directory, you can get the path using AppDomain.BaseDirectory So for example if you’re … Read more