38 lines
1.7 KiB
Python
38 lines
1.7 KiB
Python
import math
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def degrees_to_radians(degrees):
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"""degrees go to radians"""
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return degrees / 180 * math.pi
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def radians_to_degrees(radians):
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"""radians go to degrees"""
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return radians * 180 / math.pi
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def to_signed_number(number, max_bytes):
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"""Converts a binary number to a signed number"""
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if number < 2 ** (8 * max_bytes - 1):
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return number
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else:
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return number - 2 ** (8 * max_bytes)
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def pretty_xml(element, indent, newline, level=0): # elemnt为传进来的Elment类，参数indent用于缩进，newline用于换行
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"""为ElementTree处理的XML添加缩进和换行"""
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if element: # 判断element是否有子元素
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if (element.text is None) or element.text.isspace(): # 如果element的text没有内容
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element.text = newline + indent * (level + 1)
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else:
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element.text = newline + indent * (level + 1) + element.text.strip() + newline + indent * (level + 1)
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# else: # 此处两行如果把注释去掉，Element的text也会另起一行
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# element.text = newline + indent * (level + 1) + element.text.strip() + newline + indent * level
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temp = list(element) # 将element转成list
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for subelement in temp:
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if temp.index(subelement) < (len(temp) - 1): # 如果不是list的最后一个元素，说明下一个行是同级别元素的起始，缩进应一致
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subelement.tail = newline + indent * (level + 1)
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else: # 如果是list的最后一个元素， 说明下一行是母元素的结束，缩进应该少一个
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subelement.tail = newline + indent * level
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pretty_xml(subelement, indent, newline, level=level + 1) # 对子元素进行递归操作
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