如何格式化长变量以在python中使用逗号

Question

嗨我想在打印之前格式化变量，如下所示，我似乎无法找到一个有助于正确的啧啧。

def volume_sphere(radius): 
    """radius = 12,742 / 2 (earth diameter)"""
    pi = 3.141592653589
    volume = ( 4 / 3 ) * pi * radius ** 3 
    format('{:20,.2f}'.format(volume))
#    volume format 0,000,000,000,000,000,000


    print ("Calculate volume of a sphere (The Earth) \nvolume = ( 4 / 3 ) * pi * radius ** 3")
    print ("Radius = ", radius, "Kms")
    print ("The volume of the earth = ", volume, "Kms3\n\n")


volume_sphere(6371)

Answer 1

这修复了格式化问题。

print ("The volume of the earth = ", '{:20,.2f}'.format(volume), "Kms3\n\n")

享受!!!