python 如何测试多个命令行参数 (sys.argv
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How to test for multiple command line arguments (sys.argv
提问by jrara
I want to test againts multiple command line arguments in a loop
我想在循环中测试多个命令行参数
> python Read_xls_files.py group1 group2 group3
No this code tests only for the first one (group1).
没有此代码仅测试第一个（group1）。
hlo = []
for i in range(len(sh.col_values(8))):
if sh.cell(i, 1).value == sys.argv[1]:
hlo.append(sh.cell(i, 8).value)
How should I modify this that I can test against one, two or all of these arguments? So, if there is group1 in one sh.cell(i, 1), the list is appended and if there is group1, group2 etc., the hlo is appended.
我应该如何修改它，以便我可以针对这些参数中的一个、两个或所有参数进行测试？因此，如果在一个 sh.cell(i, 1) 中有 group1，则附加列表，如果有 group1、group2 等，则附加 hlo。
回答by Stephen Doyle
You can iterate over sys.argv[1:], e.g. via something like:
你可以迭代sys.argv[1:]，例如通过类似的东西：
for grp in sys.argv[1:]:
for i in range(len(sh.col_values(8))):
if sh.cell(i, 1).value == grp:
hlo.append(sh.cell(i, 8).value)
回答by Caleb Hattingh
outputList = [x for x in values if x in sys.argv[1:]]
Substitute the bits that are relevant for your (spreadsheet?) situation. This is a list comprehension. You can also investigate the optparsemodule which has been in the standard library since 2.3.
替换与您的（电子表格？）情况相关的位。这是一个列表理解。您还可以研究自 2.3 以来一直在标准库中的optparse模块。
回答by Bartek
回答by mavnn
回答by John Machin
# First thing is to get a set of your query strings.
queries = set(argv[1:])
# If using optparse or argparse, queries = set(something_else)
hlo = []
for i in range(len(sh.col_values(8))):
if sh.cell(i, 1).value in queries:
hlo.append(sh.cell(i, 8).value)
=== end of answer to question ===
=== 问题回答结束 ===
Aside: the OP is using xlrd ... here are a couple of performance hints.
旁白：OP 正在使用 xlrd ...这里有一些性能提示。
Doesn't matter too much with this simple example, but if you are going to do a lot of coordinate-based accessing of cell values, you can do better than that by using Sheet.cell_value(rowx, colx) instead of Sheet.cell(rowx, colx).value which builds a Cell object on the fly:
这个简单的例子没有太大关系，但如果你要对单元格值进行大量基于坐标的访问，你可以通过使用 Sheet.cell_value(rowx, colx) 而不是 Sheet.cell 来做得更好(rowx, colx).value 动态构建一个 Cell 对象：
queries = set(argv[1:])
hlo = []
for i in range(len(sh.nrows)): # all columns have the same size
if sh.cell_value(i, 1) in queries:
hlo.append(sh.cell_value(i, 8))
or you could use a list comprehension along with the Sheet.col_values(colx) method:
或者您可以将列表理解与 Sheet.col_values(colx) 方法一起使用：
hlo = [
v8
for v1, v8 in zip(sh.col_values(1), sh.col_values(8))
if v1 in queries
]
回答by Graeme Perrow
I believe this would work, and would avoid iterating over sys.argv:
我相信这会起作用，并且会避免迭代 sys.argv：
hlo = []
for i in range(len(sh.col_values(8))):
if sh.cell(i, 1).value in sys.argv[1:]:
hlo.append(sh.cell(i, 8).value)
