[Example 1-61 #eg-1-61] 所展示的 ``cmath`` 模块包含了一些用于复数运算的函数. ====Example 1-61. 使用 cmath 模块====[eg-1-61] ``` File: cmath-example-1.py import cmath print "pi", "=>", cmath.pi print "sqrt(-1)", "=>", cmath.sqrt(-1) pi => 3.14159265359 sqrt(-1) => 1j
[Example 1-61 #eg-1-61] 所展示的 ``cmath`` 模块包含了一些用于复数运算的函数. ====Example 1-61. 使用 cmath 模块====[eg-1-61] ``` File: cmath-example-1.py import cmath print "pi", "=>", cmath.pi print "sqrt(-1)", "=>", cmath.sqrt(-1) pi => 3.14159265359 sqrt(-1) => 1j