if I initiate an empty dictionary {}, and I have two lists
var1 = ['trade1', 'trade2', 'trade3']
var2 = ['swap', 'bond', 'caplet']
how can I update the dictionary to make it as shown below:
{'trade1':swap, 'trade2':bond, 'trade3': caplet}
after that, I may get more combinations, such as:
var 3 = ['trade4'], and var 4 = ['Irswap']
how to keep updating the above dict with those new trades to become:
{'trade1':swap, 'trade2':bond, 'trade3': caplet, 'trade4':Irswap, 'trade5':..}
finally, how to cache the loaded trades in this dict, for instance, if I got a new combination: trade1:xyz, because trade1 is already in this dict, it will not update this dict. Thank you!
