字符串格式化

print("i am %s" %‘admin‘)   # i am admin
msg = "i am %s" %‘Alex‘
print(msg)  # i am Alex
print("i am %s, i am %d" %(‘admin‘, 18))    # i am admin, i am 18
tp1 = ‘i am %(name)s age %(age)d‘ % {‘name‘:‘alex‘, ‘age‘:18}
print(tp1)  # i am alex age 18
# 加颜色 \033[43;1m........\033[0m
print(‘\033[45;1mhello\033[0m‘)

print(‘root‘, ‘x‘, ‘0‘, ‘0‘, sep=‘:‘)   # root:x:0:0

# format
tp2 = ‘i am {}, age {}, {}‘.format(‘alex‘, 28, ‘hhh‘)
print(tp2)  # i am alex, age 28, hhh