import os, time, sys, zipfile, datetime,calendar
from os import sep

# Script Parameters
# Target Directory for final Zip files
target_dir = r'target' 
# The name of the sql file (this will be the same for all backups)
file_name = 'databases.sql' 
# Authentication
user = 'username' 
password = 'password'
# The command for the mysql dump. This could include the entire path to the executable if mysqldump is not on the path environment variable
dumpcmd = r'mysqldump' 
# The host you want to connect to
host = 'example.com' 

args = [dumpcmd, '-C', '-f', '--host=%s' %host, '--user=%s' %user, '--password=%s' %password, '--result-file=%s' %file_name, '--all-databases']

os.chdir(target_dir)
cmd = ' '.join(args)
print 'Running Command: %s' %cmd.replace(password, '*'*len(password))
os.system(cmd)

# Below is for zipping the files and creating a redundant  backup
def getZipFileName():
	# Set time variables (
	# Note: you don't have to use some of them, 
	# but they make the script easier to understand
	t = time.time(); g = time.gmtime(t)
	year = g[0]; month = g[1]; day = g[2]
	
	try:
		datetime.date(year, month, day+1)
	except:
		# Last day of the month, return month name
		root = time.strftime('%Y', g)
		if not os.access(root, os.F_OK):
			os.mkdir(root)
		return os.path.join(root, '%s.zip' %time.strftime('%b'))
	
	if int(time.strftime('%w', g)) == 0:
		# Last day of week, return week number
		cal_month = calendar.monthcalendar(year, month)
		for week in cal_month:
			if day in week:
				return 'Week%i.zip' %month.index(week)
	# Just a regular weekday...
	return '%s.zip' %time.strftime('%A')

# Write the zip file
zip_name = getZipFileName()
zip_file = os.path.abspath(zip_name)
zip = zipfile.ZipFile(zip_file, 'w', zipfile.ZIP_DEFLATED)
zip.write(file_name)
zip.close()

# Remove uncompressed sql file
os.remove(file_name)
to_path = os.path.join(copy_dir, zip_name)
to_dir = sep.join(to_path.split(sep)[:-1])
if not os.access(to_dir, os.F_OK):
	os.makedirs(to_dir)
if os.access(to_path, os.F_OK):
	os.remove(to_path)
shutil.copy(zip_file, to_path)