【发布时间】：2013-07-28 13:58:32
【问题描述】：
我有一个二维列表，我需要根据第一个记录字段进行搜索，内容是包含正斜杠字符的字符串。
在测试 arg_size 时，如果存在正斜杠字符，搜索总是会失败。为了排除故障，我对参数进行了硬编码。
提前致谢。
# -*- coding: UTF-8 -*-
bolt = {} # create empty dictionary
thread_geometry = {} # create empty dictionary
# variables for record position
size = 0
dia_in = 1
dia_mm = 2
tpi_UNC = 3
pitch_UNC_in = 4
pitch_UNC_mm = 5
tpi_UNF = 6
pitch_UNF_in = 7
pitch_UNF_mm = 8
tpi_UNEF = 9
pitch_UNEF_in = 10
pitch_UNEF_mm = 11
# lookup table for bolt standards,negative values represents NULL
bolt_table = [
[r"#0", 0.06, 1.524, -1, -1, -1, 80, 0.0125, 0.3175, -1, -1, -1 ],
[r"#1", 0.073, 1.8542, 64, 0.015625, 0.3969, 72, 0.013888, 0.3528, -1, -1, -1 ],
[r"#2", 0.086, 2.1844, 56, 0.017857, 0.4536, 64, 0.015625, 0.3969, -1, -1, -1 ],
[r"#3", 0.099, 2.5146, 48, 0.020833, 0.5292, 56, 0.017857, 0.4536, -1, -1, -1 ],
[r"#4", 0.112, 2.8448, 40, 0.025, 0.635, 48, 0.020833, 0.5292, -1, -1, -1 ],
[r"#5", 0.125, 3.175, 40, 0.025, 0.635, 44, 0.022727, 0.5773, -1, -1, -1 ],
[r"#6", 0.138, 3.5052, 32, 0.03125, 0.7938, 40, 0.025, 0.635, -1, -1, -1 ],
[r"#8", 0.164, 4.1656, 32, 0.03125, 0.7938, 36, 0.027778, 0.7056, -1, -1, -1 ],
[r"#10", 0.19, 4.826, 24, 0.041667, 1.0583, 32, 0.03125, 0.7938, -1, -1, -1 ],
[r"#12", 0.216, 5.4864, 24, 0.041667, 1.0583, 28, 0.035714, 0.9071, 32, 0.03125, 0.7938 ],
[r"1/4", 0.25, 6.35, 20, 0.05, 1.27, 28, 0.035714, 0.9071, 32, 0.03125, 0.7938 ],
[r"5⁄16", 0.3125, 7.9375, 18, 0.055556, 1.4111, 24, 0.041667, 1.0583, 32, 0.03125, 0.7938 ],
[ur"3⁄8", 0.375, 9.525, 16, 0.0625, 1.5875, 24, 0.041667, 1.0583, 32, 0.03125, 0.7938 ],
[r"7⁄16", 0.4375, 11.1125, 14, 0.071428, 1.8143, 20, 0.05, 1.27, 28, 0.035714, 0.9071 ],
[r"1⁄2", 0.5, 12.7, 13, 0.076923, 1.9538, 20, 0.05, 1.27, 28, 0.035714, 0.9071 ],
[r"9⁄16", 0.5625, 14.2875, 12, 0.083333, 2.1167, 18, 0.055556, 1.4111, 24, 0.041667, 1.0583 ],
[r"5⁄8", 0.625, 15.875, 11, 0.090909, 2.3091, 18, 0.055556, 1.4111, 24, 0.041667, 1.0583 ],
[r"3⁄4", 0.75, 19.05, 10, 0.1, 2.54, 16, 0.0625, 1.5875, 20, 0.05, 1.27 ],
[r"7⁄8", 0.875, 22.225, 9, 0.111111, 2.8222, 14, 0.071428, 1.8143, 20, 0.05, 1.27 ],
[r"1", 1, 25.4, 8, 0.125, 3.175, 12, 0.083333, 2.1167, 20, 0.05, 1.27 ],
]
# # # # ------------------- Main -------------------------------------------- # # # #
# Get bolt parameters
# if the no value is entered the value will be NULL or set to a default
arg_unit = 'mm'
if arg_unit.lower() == 'mm':
bolt['unit'] = 'mm'
else:
bolt['unit'] = 'in'
arg_size = '3/8'
for x in bolt_table:
if str(x[size]) == str(arg_size):
bolt['size'] = str(arg_size)
arg_length = 2.5
if arg_length > 0:
bolt['length'] = arg_length
else:
sys.stderr.write(" Bolt length is a required field!!!")
sys.exit()
arg_thread = 'UNC'
if arg_thread.upper() == 'UNC' or arg_thread.upper() == 'UNF' or arg_thread.upper() == 'UNEF':
bolt['thread'] = arg_thread.upper()
print bolt.viewitems()
【问题讨论】：
-
当我查看调试器中的值时，我发现列表中的值已从 '3/8' u'3\u20448' 更改。我尝试在字符串前面加上 r、u 和 ur，但我得到了相同的结果。