Python : Using Pexpect:

  1. Introduction to Python
  2. Python: Choosing a Text Editor or IDE
  3. Python: Hello World
  4. Python: Variables, Strings and Numbers
  5. Python: Variable Naming
  6. Python: Math, Familiar
  7. Python: Math, Less Familiar
  8. Python: Mathematical Order of Operations
  9. Python: Introducing PEP 8
  10. Python: Text Concatenation
  11. Python: if Statements and Comparison Operators
  12. Python: else and elif statements
  13. Python: Testing Multiple Conditions
  14. Python: Testing Sets of Conditions
  15. Python: Nested if Statements
  16. Python: Lists
  17. Python: Adding To and Changing Lists
  18. Python: Lists: Take a Slice, Delete Elements, Popping Elements
  19. Python: Tuples
  20. Python: for Loops
  21. Python: Nested for Loops
  22. Python: Capturing and Formatting User Input
  23. Python: Dictionaries
  24. Python: Functions
  25. Python: While Loops
  26. Python: Data Files
  27. Python: Using Pexpect
  28. Python : Using Pexpect :
  29. Python : Using Pexpect:
  30. Python: DCL Conversion to Python

Here’s a sample Python/Pexpect script, which is called by the bash script in the previous page.

Note how the spawn function runs the command you supply as the argument, in this case “ftp”.


# Connects to a public ftp server, downloads a file

import pexpect
import sys
child = pexpect.spawn('ftp')
child.logfile = sys.stdout
child.sendline('cd /ubuntu/dists/xenial')
child.sendline('get InRelease')

You can insert working Python code anywhere in this chain, for instance if you need to handle multiple conditions with “if” statements.