Find Files Recursively By Extension

Please use the script to get files by specific extension from all level of sub-folder of given folder

def findFilesByExtensionRecursively(recPath, Ext):
    import os
    ls = []
    if os.path.exists(recPath):
        for root, dirs, files in os.walk(recPath):
            for fname in files:
                if fname.endswith(Ext):
        return ls
        return 'Please provide valid path!'

if __name__ == '__main__':
    c = 0
    print 'File Name: '
    for i in findFilesByExtensionRecursively('C:\Users\Andrews\Downloads', '.exe'):
        print i
        c += 1
    print '
    print 'Number of Files: ',c

Sample Output: