[Tutor] path string

[anatta anatta]

Dear Tutor.

I am trying to create unsuccessfully source path as a string 'str7' in part_1 of the code below, to be used in part_2 of the code.
When I define the source path explicitly in part_2 of the code (#sourcePath = r'H://TCVFLDAT'), the code works right.
How else could I find the path in part-1 and use it in part 2?

######################
Here is my code:
######################


# -*- coding: utf-8 -*-
"""
Created on Wed Jun 01 17:05:07 2016

@author: anatta
"""


# Required module
import os
import shutil
###part_1 ### looking for files to be copied and obtaining source path  ###
# Function for getting files from a folder
def fetchFiles(pathToFolder, flag, keyWord):
	'''	fetchFiles() requires three arguments: pathToFolder, flag and 
 keyWord flag must be 'STARTS_WITH' or 'ENDS_WITH' keyWord is a string to 
  search the file's name  Be careful, the keyWord is case sensitive and must
  be exact.  Example: fetchFiles('/Documents/Photos/','ENDS_WITH','.jpg')
returns: _pathToFiles and _fileNames '''
	
	_pathToFiles = []
	_fileNames = []

	for dirPath, dirNames, fileNames in os.walk(pathToFolder):
		if flag == 'ENDS_WITH':
			selectedPath = [os.path.join(dirPath,item) for item in fileNames if item.endswith(keyWord)]
			_pathToFiles.extend(selectedPath)
			
			selectedFile = [item for item in fileNames if item.endswith(keyWord)]
			_fileNames.extend(selectedFile)
			
		elif flag == 'STARTS_WITH':
			selectedPath = [os.path.join(dirPath,item) for item in fileNames if item.startswith(keyWord)]
			_pathToFiles.extend(selectedPath)
			
			selectedFile = [item for item in fileNames if item.startswith(keyWord)]
			_fileNames.extend(selectedFile) 
			    
		else:
			print fetchFiles.__doc__
			break
						
		# Try to remove empty entries if none of the required files are in directory
		try:
			_pathToFiles.remove('')
			_imageFiles.remove('')
		except ValueError:
			pass
			
		# Warn if nothing was found in the given path
		#if selectedFile == []: 
			#print 'No files with given parameters were found in:\n', dirPath, '\n'
                
                #print len(_fileNames), 'files were found is searched folder(s)' 
      		
        #return _pathToFiles, _fileNames
        #print _pathToFiles, _fileNames
        print 'path to first tuple file is:', _pathToFiles [0]
        str1 = ' '.join(_pathToFiles [0]) #convert tuple element 0 to string
        print 'length of str1 is: ', len (str1)
        str2 = str1.replace(" ", "") #remove white spaces
        print 'str2 is', str2
        str3 = str2[13:16] #extract rgeistration
        print 'str3 is registration:', str3
        
        
        str4 = 'FLDAT'
        print 'str4 is: ', str4
        str5 = str3.__add__(str4)
        print 'str 5 is: ',str5
        str6 = 'H://'
        print 'str6 is: ', str5
        str7 = str6.__add__(str5)
        print 'str7 is: ', str7  
            
        #print _fileNames
        print 'Number of files found: ', len(_fileNames)
fetchFiles('H://','ENDS_WITH','.FLD')

#### part_2 #### copying files from sourcePath to destPath

#sourcePath = r'H://TCVFLDAT'
sourcePath = r'str7'
print 'Source path is: ', sourcePath
destPath = r'c://test_o/'
print 'Destination path is: ', destPath
#ls=os.listdir('.')#list current dir
#print('listing current dir\n')
#print(ls)
for root, dirs, files in os.walk(sourcePath):

    #figure out where we're going
    dest = destPath + root.replace(sourcePath, '')

    #if we're in a directory that doesn't exist in the destination folder
    #then create a new folder
    if not os.path.isdir(dest):
        os.mkdir(dest)
        print 'Directory created at: ' + dest
    else:
        print 'Directory already exists:' + dest

for root, dirs, files in os.walk(sourcePath):
        #figure out where we're going
    dest = destPath + root.replace(sourcePath, '')
    filetype = '.FLD'# name the file ext to be copied    
    print 'All files of this type will be copied', filetype    
    #loop through all files in the directory
    for f in files:

        #compute current (old) & new file locations
        oldLoc = root + '\\' + f
        newLoc = dest + '\\' + f
        #print 'Old location is:', oldLoc
        #print 'New location is:', newLoc

        if not os.path.isfile(newLoc):
            try:
                #filetype = '.FLD'# name the file ext to be copied
                #print 'All files of this type will be copied', filetype
                filename, file_ext = os.path.splitext(oldLoc)
                print 'filename is:', filename
                print 'file ext is', file_ext
                if file_ext == filetype:
                    shutil.copy2(oldLoc, newLoc)
                    print 'File ' + f + ' copied.'
                else:
                    print 'File ' + f + ' not copied'
            except IOError:
                print 'file "' + f + '" already exists'

####################
Below is the output:
####################


Python 2.7.11 |Anaconda 4.0.0 (64-bit)| (default, Feb 16 2016, 09:58:36) [MSC v.1500 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
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>>> runfile('D:/university_2/my_code_2/2017_01_02/get_reg_&_copy_file.py', wdir='D:/university_2/my_code_2/2017_01_02')
path to first tuple file is: H://TCVFLDAT\TCV00000.FLD
length of str1 is:  49
str2 is H://TCVFLDAT\TCV00000.FLD
str3 is registration: TCV
str4 is:  FLDAT
str 5 is:  TCVFLDAT
str6 is:  TCVFLDAT
str7 is:  H://TCVFLDAT
Number of files found:  21
Source path is:  str7
Destination path is:  c://test_o/
>>>