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--- python:pythonbasicexamples [2020/02/26 15:55] – [os.path] admin
+++ python:pythonbasicexamples [2022/10/29 16:15] (current) – external edit 127.0.0.1
@@ Line 22: / Line 22: @@
   * Remove (delete) the directory path<code python>
 os.rmdir(path)</code>
-==== os.path ====
 ==== os.path basic functions ====
   * split:<code python>
@@ Line 210: / Line 210: @@
 print pathofexecute
 </code>
-===== Read and Update File =====
+==== Read and Update File ====
 <code python>
 with open(filename, "rb") as f:
@@ Line 218: / Line 218: @@
    with open(filename, "wb") as f:
       f.write(content)
+</code>
+===== Python Command Line Arguments =====
+refer: https://www.tutorialspoint.com/python/python_command_line_arguments.htm
+Consider we want to pass two file names through command line and we also want to give an option to check the usage of the script. Usage of the script is as follows −
+<code bash>
+usage: test.py -i <inputfile> -o <outputfile>
+</code>
+Here is the following script to test.py −
+<code python>
+#!/usr/bin/python
+import sys, getopt
+def main(argv):
+   inputfile = ''
+   outputfile = ''
+   try:
+      opts, args = getopt.getopt(argv,"hi:o:",["ifile=","ofile="])
+   except getopt.GetoptError:
+      print 'test.py -i <inputfile> -o <outputfile>'
+      sys.exit(2)
+   for opt, arg in opts:
+      if opt == '-h':
+         print 'test.py -i <inputfile> -o <outputfile>'
+         sys.exit()
+      elif opt in ("-i", "--ifile"):
+         inputfile = arg
+      elif opt in ("-o", "--ofile"):
+         outputfile = arg
+   print 'Input file is "', inputfile
+   print 'Output file is "', outputfile
+if __name__ == "__main__":
+   main(sys.argv[1:])
+</code>
+Now, run above script as follows −
+  * Option1:<code bash>
+$ test.py -h
+</code>output:<code>
+test.py -i <inputfile> -o <outputfile>
+</code>
+  * Option2:<code bash>
+$ test.py -i inputfile
+</code>output:<code>
+Input file is " inputfile
+Output file is "
 </code>