30 Days Of Python

Day 1 just want to say thanks for this valuable resource🙏🏻

#i language = [] for item in countries_info: for items in item['languages']: if items in language: continue else: language.append(items) print(language) print(len(language)) #ii lang_counter = {} for item in countries_info: for lang in item['languages']: if lang in lang_counter: lang_counter[lang] += 1 else: lang_counter[lang] = 1 popular_langs = sorted(lang_counter, key = lang_counter.get, reverse = True) top_10 = popular_langs[:10] print(top_10) # here we use a dictionary and we add item, we add the language as key and the numbers of the repeatation as value. # every time it see the language again it add to the number. #sorted : key---> it show how to sort and here we use the value to be sorted(numbers of repeat) #reverse = true ---> from most to least. #iii population = [] for item in countries_info: population.append(item['population']) most_pop = sorted(population, reverse = True) top_10 = most_pop[:10] print(top_10) most_10 = [] for i in top_10: for item in countries_info: if i == item["population"]: most_10.append(item['name']) print(most_10)

That's not true, it was a convention of programming about math topic(common in MATLAB) but in math you use 2(elevate n)