try except模块

try-except模块 如果try代码块中的代码导致了错误,python将查找这样的except代码块,并运行其中的代码,即指定的错误与引发的错误相同。 例程: import csv from matplotlib import pyplot as plt from datetime import datetime filename = 'death_valley_2014.csv' with open(filename) as f: reader = csv.reader(f) header_row = next(reader) dates,highs,lows=