old_contents: from __future__ import unicode_literals
  import frappe
  
  install_docs = [
  	{"doctype":"Role", "role_name":"Stock Manager", "name":"Stock Manager"},
  	{"doctype":"Role", "role_name":"Item Manager", "name":"Item Manager"},
  	{"doctype":"Role", "role_name":"Stock User", "name":"Stock User"},
  	{"doctype":"Role", "role_name":"Quality Manager", "name":"Quality Manager"},
  	{"doctype":"Item Group", "item_group_name":"All Item Groups", "is_group": 1},
  	{"doctype":"Item Group", "item_group_name":"Default", 
  		"parent_item_group":"All Item Groups", "is_group": 0},
  ]
  
  def get_warehouse_account_map():
  	if not frappe.flags.warehouse_account_map or frappe.flags.in_test:
  		warehouse_account = frappe._dict()
  
  		for d in frappe.get_all('Warehouse',
  			fields = ["name", "account", "parent_warehouse", "company"],
  			order_by="lft, rgt"):
  			if not d.account:
  				d.account = get_warehouse_account(d, warehouse_account)
  
  			if d.account:
  				d.account_currency = frappe.db.get_value('Account', d.account, 'account_currency', cache=True)
  				warehouse_account.setdefault(d.name, d)
  
  		frappe.flags.warehouse_account_map = warehouse_account
  
  	return frappe.flags.warehouse_account_map
  
  def get_warehouse_account(warehouse, warehouse_account=None):
  	account = warehouse.account
  	if not account and warehouse.parent_warehouse:
  		if warehouse_account:
  			account = warehouse_account.get(warehouse.parent_warehouse).account
  		else:
  			account = frappe.db.sql("""
  				select
  					account from `tabWarehouse`
  				where
  					lft <= %s and rgt >= %s and company = %s
  					and account is not null and ifnull(account, '') !=''
  				order by lft desc limit 1""", (warehouse.lft, warehouse.rgt, warehouse.company), as_list=1)
  
  			account = account[0][0] if account else None
  
  	if not account:
  		account = get_company_default_inventory_account(warehouse.company)
  
  	return account
  	
  def get_company_default_inventory_account(company):
  	return frappe.get_cached_value('Company',  company,  'default_inventory_account')
new_contents: from __future__ import unicode_literals
  import frappe
  
  install_docs = [
  	{"doctype":"Role", "role_name":"Stock Manager", "name":"Stock Manager"},
  	{"doctype":"Role", "role_name":"Item Manager", "name":"Item Manager"},
  	{"doctype":"Role", "role_name":"Stock User", "name":"Stock User"},
  	{"doctype":"Role", "role_name":"Quality Manager", "name":"Quality Manager"},
  	{"doctype":"Item Group", "item_group_name":"All Item Groups", "is_group": 1},
  	{"doctype":"Item Group", "item_group_name":"Default", 
  		"parent_item_group":"All Item Groups", "is_group": 0},
  ]
  
  def get_warehouse_account_map():
  	if not frappe.flags.warehouse_account_map or frappe.flags.in_test:
  		warehouse_account = frappe._dict()
  
  		for d in frappe.get_all('Warehouse',
  			fields = ["name", "account", "parent_warehouse", "company"],
  			order_by="lft, rgt"):
  			if not d.account:
  				d.account = get_warehouse_account(d, warehouse_account)
  
  			if d.account:
  				d.account_currency = frappe.db.get_value('Account', d.account, 'account_currency', cache=True)
  				warehouse_account.setdefault(d.name, d)
  
  		frappe.flags.warehouse_account_map = warehouse_account
  
  	return frappe.flags.warehouse_account_map
  
  def get_warehouse_account(warehouse, warehouse_account=None):
  	account = warehouse.account
  	if not account and warehouse.parent_warehouse:
  		if warehouse_account:
  			account = warehouse_account.get(warehouse.parent_warehouse).account
  		else:
  			account = frappe.db.sql("""
  				select
  					account from `tabWarehouse`
  				where
  					lft <= %s and rgt >= %s and company = %s
  					and account is not null and ifnull(account, '') !=''
  				order by lft desc limit 1""", (warehouse.lft, warehouse.rgt, warehouse.company), as_list=1)
  
  			account = account[0][0] if account else None
  
  	if not account and warehouse.company:
  		account = get_company_default_inventory_account(warehouse.company)
  
  	return account
  	
  def get_company_default_inventory_account(company):
  	return frappe.get_cached_value('Company',  company,  'default_inventory_account')
  
subject: Update __init__.py