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Python Open Source » Development » SnapLogic 
SnapLogic » snaplogic » components » computils » convert_utils.py
# $SnapHashLicense:
# 
# SnapLogic - Open source data services
# 
# Copyright (C) 2008 - 2009, SnapLogic, Inc.  All rights reserved.
# 
# See http://www.snaplogic.org for more information about
# the SnapLogic project. 
# 
# This program is free software, distributed under the terms of
# the GNU General Public License Version 2. See the LEGAL file
# at the top of the source tree.
# 
# "SnapLogic" is a trademark of SnapLogic, Inc.
# 
# 
# $

#    $Id: convert_utils.py 9163 2009-10-06 22:44:08Z dhiraj $

from snaplogic.common.snap_exceptions import SnapComponentError

DefaultDateTimeFormatString = "%Y-%m-%dT%H:%M:%S" 
"""ISO 8601 format."""

DefaultNumberFormatString = "%s"
"""No special formatting."""

def datetime_to_string(dt,  fmt=DefaultDateTimeFormatString):
    """
    Convert datetime to string. By default, the value is converted to ISO 8601 format.
    
    @param dt: Datetime object to be converted.
    @type dt:  datetime
    
    @param fmt: Format of datetime string representation.
    @type fmt:  str
    
    
    @return: string version of datetime object.
    
    """
    try:
        return unicode(dt.strftime(fmt))
    except Exception, e:
        raise SnapComponentError("Could not format date %s to with format '%s': %s" % (str(dt),fmt,e))
    

def number_to_string(num, fmt=DefaultNumberFormatString):
    """
    Convert number to string.
    
    @param num: Number to be converted.
    @type num:  number
    
    @param fmt: The format to convert by, by default it is a simple python stringify.
    @type fmt:  str
    
    @return: string version of number.
    
    """
    
    try:
        return unicode(fmt % num)
    except Exception, e:
        raise SnapComponentError("Could not format '%s' with format '%s': %s" % (num,fmt,e))
    
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