mcsas.datafile.datafile module

class DataFile(filename, **kwargs)

Bases: object

Base class for handling data files. Can be initialized with a file (name) to read or with a data array.

Test error behaviour >>> from utils import DataFile, getTempFileName, getTempFile, FileNotFound >>> fn = getTempFileName() >>> try: DataFile.checkFilename(fn) ... except FileNotFound, e: str(e).find(fn) > 0 True

Prepare test data file >>> fd = getTempFile() >>> l = [‘123 234n’, ‘1,23 43.4rn’, ‘2.3; 34,4n’, ... ‘21.2 42 2n’, ‘23,2 3.4 n’] >>> fd.writelines(l) >>> fd.close()

Test data parsing >>> df = DataFile() >>> df.loadFile(fd.name) [(‘123’, ‘234’), (‘1.23’, ‘43.4’), (‘2.3’, ‘34.4’), (‘21.2’, ‘42’, ‘2’), (‘23.2’, ‘3.4’)]

Remove test data finally >>> import os >>> if os.path.isfile(fd.name): ... os.remove(fd.name)

classmethod extensions()

Warning

method ‘datafile.datafile.DataFile.extensions’ undocumented

fileFilter

classmethod(function) -> method

Convert a function to be a class method.

A class method receives the class as implicit first argument, just like an instance method receives the instance. To declare a class method, use this idiom:

class C:

def f(cls, arg1, arg2, ...): ... f = classmethod(f)

It can be called either on the class (e.g. C.f()) or on an instance (e.g. C().f()). The instance is ignored except for its class. If a class method is called for a derived class, the derived class object is passed as the implied first argument.

Class methods are different than C++ or Java static methods. If you want those, see the staticmethod builtin.

filename

Absolute path name of this file.

getDataObj()

Creates and returns the appropriate DataObj instance for this file type.

name

The plain name of the file with path and extension stripped.

readFile(**kwargs)

Gets a proper file name and returns file data. May modify the instance. To be reimplemented.

static sanitizeReadFilename(filename)

Checks provided filename for plausibility and updates LastPath.

classmethod sanitizeWriteFilename(filename)

Checks and sets the file name to write to.

setFilename(filename)

Checks provided filename for plausibility and updates LastPath

write(filename, **kwargs)

Warning

method ‘datafile.datafile.DataFile.write’ undocumented

classmethod writeData(filename, data, **kwargs)

Convenience method to write data directly to file.

classmethod writeFile(filename, data, **kwargs)

Gets a proper file name and numpy array and writes it to file. Reimplement this.

classproperty(func)

Warning

function ‘datafile.datafile.classproperty’ undocumented