更新

Python-100-Days/Day01-15/Day02/circle.py

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+"""
+
+输入半径计算圆的周长和面积
+
+Version: 0.1
+Author: 骆昊
+Date: 2018-02-27
+
+"""
+
+import math
+
+radius = float(input('请输入圆的半径: '))
+perimeter = 2 * math.pi * radius
+area = math.pi * radius * radius
+print('周长: %.2f' % perimeter)
+print('面积: %.2f' % area)