So I am using a for loop to determine if a specific key exists in a array. But so far every method I tried didn't work for what I am trying to accomplish.
My code looks as follow:
for i in range(1,len(opslag)):
info_product = 'https://examplesite.com/'+str(opslag[i])+'.json'
info_get = session.get(info_product)
text_info_prdt = info_get.text
json_info_prdt =json.loads(text_info_prdt)
if json_info_prdt['product']['metafields']['meta_title_nl'] in json_info_prdt['product']['metafields']:
print(json_info_prdt['product']['metafields']['meta_title_nl'])
else:
print(json_info_prdt['product']['id'])
So the value in this case json_info_prdt['product']['metafields']['meta_title_nl'] , doesn't exist in every array I am trying to loop through. So sometimes the if else statement will work, and the value will be printed. But sometimes the value json_info_prdt['product']['metafields']['meta_title_nl'] doesn't exist at all and gives me a KeyError.
So What I want to do is to get all the ID's of the products that return a KeyError but I don't want the loop to stop but to continue till it's finished. So I also don't want the loop to restart itself because that's pointless.
My JSON looks as follow:
{
product:{
article_code:"",
barcode:"",
brand_id:null,
created_at:"2017-07-07T12:49:23+02:00",
data01:"",
data02:"",
data03:"",
delivery_date_id:null,
has_custom_fields:true,
has_discounts:false,
has_matrix:false,
hits:0,
hs_code:null,
id:52847777,
image_id:130661048,
is_visible:true,
price_excl:0,
price_incl:0,
price_old_excl:0,
price_old_incl:0,
product_set_id:383078,
product_type_id:null,
search_context:"",
shop_id:240359,
sku:"",
supplier_id:null,
updated_at:"2018-07-10T10:53:15+02:00",
variants_count:4,
visibility:"visible",
weight:0,
custom_fields:[
],
variants:[
],
product_relations:[
],
product_categories:[
],
product_discounts:[
],
product_type:null,
product_filter_values:[
],
product_bundles:[
],
metafields:{
meta_title_nl:"Big House",
meta_title_en:"cxzcxzcxz",
meta_description_nl:"This is a big house"
},
supplier:null,
product_images:[
],
brand:null,
delivery_date:null,
image:{
},
nl:{
},
en:{
},
tags:null
}
}
As you can see the value meta_title_nl exists in this one, but sometimes it doesn't exist.
The if-else-structure for catching errors is called try-except. So you should use :
try:
print(json_info_prdt['product']['metafields']['meta_title_nl'])
except:
print(json_info_prdt['product']['id'])