習題24 格式化字符串

輸出格式化字符串的兩種方法：

print(f"we have {beans} beans")
print("we have {} beans".format(beans))

#習題24

print("Let's practice everthing." )

print('You\'d  need to know \'bout escapes with \\ that do \n newlines and \t tabs.')

poem = """
\tThe lovely world
with logic so firmly planted
cannot discern \n the needs of love
nor comprehend passion from intuition
and requires an explanation
\n\t\twhere there is none.
"""

print ("------------")
print(poem)
print("-------------")


five = 10 - 2 + 3 - 6
print(f"This should be five:{five}")

def secret_formula(started):
	jelly_beans = started * 500
	jars = jelly_beans/1000
	crates = jars/100
	return jelly_beans,jars,crates


start_point = 10000
beans,jars,crates = secret_formula(start_point)

print(f"With a starting point of: {start_point}".format(start_point))	

print(f"We'd have {beans} beans ,{jars}jars,{crates}crates.")

start_point = start_point/10
print("We can also do that this way:")
formula = secret_formula(start_point)
print("WE's have {}beans,{}jars,{}crates.".format(*formula))                                                                                                                                                                                                                                                                                                                                                                                                                                                                         


print("we have {} beans".format(beans))