Python中字符串的格式化方法小结

pi = 3.14159
print(" pi = %1.2f ", % pi)

s1 = "cats"
s2 = "dogs"
s3 = " %s and %s living together" % (s1, s2)

set = (%s, %s, %s, %s, %s, %s, %s, %s) " % (a,b,c,d,e,f,g,h,i)

set = set = " ({0}, {1}, {2}, {3}, {4}, {5}, {6}, {7}) ".format(a,b,c,d,e,f,g)

"%(n)d %(x)s" %{"n":1, "x":"spam"}
reply = """
Greetings...
Hello %(name)s!
Your age squared is %(age)s
"""
values = {'name':'Bob', 'age':40}
print rely % values

template = '{0},{1} and {2}'
template.format('spam','ham','eggs')

template = '{motto}, {pork} and {food}'
template.format(motto='spam', pork='ham', food='eggs')

template = '{motto}, {0} and {food}'
template.format('ham', motto='spam', food='eggs')

'{motto}, {0} and {food}'.format(42, motto=3.14, food=[1,2,3])