I am new in Python (2 weeks) and got stucked in a issue.  

I have this growing dictionary: 

```
dict1={"some_large_key1":"value1","some_large_key2":"value2",........,"some_large_key1000":"value1000"}

```

Issue 1: I want to create a csv file,in which i don't want to include some of the key,value pairs.  

--> 1 possible solution is to make a list of keys and ignore the entire list. 

```
list1=["some_large_key1","some_large_key2","some_large_key3"]
for key,value in dict1:
    if key not in list1:         #something like this
        #do something
    else:
        #do something

```

Issue 2: I don't want to give such a large key name, instead i can just give : 

```
list1=["key1","key2",...]

```

Is it a right approach or should i think something else ?