练习

s = "Python String" print(s.upper()) print(s.lower()) print(s.find('i')) print(s.replace('ing','gni')) print(s.split(' '))
print("{:>15s}:{:<8.2f}".format("Length",23.87501))
print("{0:b}".format(389)) print("{0:o}".format(389)) print("{0:d}".format(389)) print("{0:x}".format(389)) print(chr(389))