def?works_fine（）:
????a?=?5
????b?=?6
????assert（a?+?b?==?11）

def?throws_an_exception（）:
????a?=?5
????b?=?6
????assert（a?+?b?==?10）

def?calling_things（）:
????works_fine（）
????throws_an_exception（）

calling_things（）

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2018-03-01?17:12??Python?for?Data?Analysis-1st-edition\
?????目錄???????????0??2018-03-01?17:13??Python?for?Data?Analysis-1st-edition\pydata-book-1st-edition\
?????目錄???????????0??2018-03-01?17:12??Python?for?Data?Analysis-1st-edition\pydata-book-1st-edition\ch02\
?????目錄???????????0??2018-03-01?17:12??Python?for?Data?Analysis-1st-edition\pydata-book-1st-edition\ch02\movielens\
?????文件??????171308??2017-11-16?00:30??Python?for?Data?Analysis-1st-edition\pydata-book-1st-edition\ch02\movielens\movies.dat
?????文件????24594131??2017-11-16?00:30??Python?for?Data?Analysis-1st-edition\pydata-book-1st-edition\ch02\movielens\ratings.dat
?????文件????????5189??2017-11-16?00:30??Python?for?Data?Analysis-1st-edition\pydata-book-1st-edition\ch02\movielens\README
?????文件??????134368??2017-11-16?00:30??Python?for?Data?Analysis-1st-edition\pydata-book-1st-edition\ch02\movielens\users.dat
?????目錄???????????0??2018-03-01?17:12??Python?for?Data?Analysis-1st-edition\pydata-book-1st-edition\ch02\names\
?????文件????????5724??2017-11-16?00:30??Python?for?Data?Analysis-1st-edition\pydata-book-1st-edition\ch02\names\NationalReadMe.pdf
?????文件???????24933??2017-11-16?00:30??Python?for?Data?Analysis-1st-edition\pydata-book-1st-edition\ch02\names\yob1880.txt
?????文件???????24065??2017-11-16?00:30??Python?for?Data?Analysis-1st-edition\pydata-book-1st-edition\ch02\names\yob1881.txt
?????文件???????26559??2017-11-16?00:30??Python?for?Data?Analysis-1st-edition\pydata-book-1st-edition\ch02\names\yob1882.txt
?????文件???????26003??2017-11-16?00:30??Python?for?Data?Analysis-1st-edition\pydata-book-1st-edition\ch02\names\yob1883.txt
?????文件???????28670??2017-11-16?00:30??Python?for?Data?Analysis-1st-edition\pydata-book-1st-edition\ch02\names\yob1884.txt
?????文件???????28625??2017-11-16?00:30??Python?for?Data?Analysis-1st-edition\pydata-book-1st-edition\ch02\names\yob1885.txt
?????文件???????29822??2017-11-16?00:30??Python?for?Data?Analysis-1st-edition\pydata-book-1st-edition\ch02\names\yob1886.txt
?????文件???????29532??2017-11-16?00:30??Python?for?Data?Analysis-1st-edition\pydata-book-1st-edition\ch02\names\yob1887.txt
?????文件???????33065??2017-11-16?00:30??Python?for?Data?Analysis-1st-edition\pydata-book-1st-edition\ch02\names\yob1888.txt
?????文件???????32297??2017-11-16?00:30??Python?for?Data?Analysis-1st-edition\pydata-book-1st-edition\ch02\names\yob1889.txt
?????文件???????33621??2017-11-16?00:30??Python?for?Data?Analysis-1st-edition\pydata-book-1st-edition\ch02\names\yob1890.txt
?????文件???????33186??2017-11-16?00:30??Python?for?Data?Analysis-1st-edition\pydata-book-1st-edition\ch02\names\yob1891.txt
?????文件???????36542??2017-11-16?00:30??Python?for?Data?Analysis-1st-edition\pydata-book-1st-edition\ch02\names\yob1892.txt
?????文件???????35434??2017-11-16?00:30??Python?for?Data?Analysis-1st-edition\pydata-book-1st-edition\ch02\names\yob1893.txt
?????文件???????36817??2017-11-16?00:30??Python?for?Data?Analysis-1st-edition\pydata-book-1st-edition\ch02\names\yob1894.txt
?????文件???????38232??2017-11-16?00:30??Python?for?Data?Analysis-1st-edition\pydata-book-1st-edition\ch02\names\yob1895.txt
?????文件???????38747??2017-11-16?00:30??Python?for?Data?Analysis-1st-edition\pydata-book-1st-edition\ch02\names\yob1896.txt
?????文件???????37936??2017-11-16?00:30??Python?for?Data?Analysis-1st-edition\pydata-book-1st-edition\ch02\names\yob1897.txt
?????文件???????40937??2017-11-16?00:30??Python?for?Data?Analysis-1st-edition\pydata-book-1st-edition\ch02\names\yob1898.txt
?????文件???????38141??2017-11-16?00:30??Python?for?Data?Analysis-1st-edition\pydata-book-1st-edition\ch02\names\yob1899.txt
?????文件???????46898??2017-11-16?00:30??Python?for?Data?Analysis-1st-edition\pydata-book-1st-edition\ch02\names\yob1900.txt
............此處省略177個文件信息