ROOTutils.DirectoryChanger Class Reference

Public Member Functions
def	__init__
def	saveCurrentDir
def	saveDir
def	changeDir
def	restoreDir
def	forget
def	__del__
def	__enter__
def	__exit__
def	__init__
def	saveCurrentDir
def	saveDir
def	changeDir
def	restoreDir
def	forget
def	__del__
def	__enter__
def	__exit__

Public Attributes
	newDir
	oldDir

Detailed Description

Object changing ROOT directory while on scope.

The purpose is to make a ROOT directory current only as long as it is needed.
The most typical uses of this objects include the automatic restoration of
the previous directory as the object falls out of scope.
Two methods are supported:
1. function scope:
      
      def writeEverythingInto(dir, everything):
        dirChanger = ROOTutils.DirectoryChanger(dir)
        for item in everything: item.Write()
      # writeEverythingInto()
      
2. local scope (equivalent to using `activateDirectory()`):
      
      with DirectoryChanger(dir):
        for item in everything: item.Write()
      # with

Definition at line 172 of file icarusalg/icarusalg/gallery/helpers/python/ROOTutils.py.

Constructor & Destructor Documentation

def ROOTutils.DirectoryChanger.__init__	(		self,
			newDir = None,
			saveDir = None
	)

Definition at line 195 of file icarusalg/icarusalg/gallery/helpers/python/ROOTutils.py.

  def __init__(self, newDir = None, saveDir = None):
    if saveDir: self.saveDir(saveDir)
    else:       self.saveCurrentDir()
    self.newDir = newDir