####################
# Exceptions
###################
class NE_VarEmpty:
    def __init__(self, value):
        self.value = value
    def __str__(self):
        return `self.value`


class NE_NoFilename:
    def __init__(self, value):
        self.value = value
    def __str__(self):
        return `self.value`


class NE_InvalidDirectory:
    def __init__(self, value):
        self.value = value
    def __str__(self):
        return `self.value`

class NE_FoundPic:
    def __init__(self, value):
        self.value = value
    def __str__(self):
        return `self.value`