# textformat.py # # Different examples of text formatting. # The file stocks.csv has some CSV formatted stock market data # "symbol",price,change,volume. Read it into a list of dictionaries from collections import namedtuple StockData = namedtuple("StockData",["name","price","change","volume"]) stockdata = [] for line in open("stocks.csv"): fields = line.split(",") record = StockData(fields[0].strip('"'),float(fields[1]),float(fields[2]),int(fields[3])) stockdata.append(record) # Traditional string formatting print("Traditional string formatting:") for s in stockdata: print("%10s %10.2f %10.2f %10d" % (s.name,s.price,s.change,s.volume)) # Some new-style formatting examples print("\nNew-style formatting:") for s in stockdata: print("{s.name:>10s} {s.price:10.2f} {s.change:10.2f} {s.volume:10d}".format(s=s))