Change Python interactive prompt ">>>"

It's great to set it to either:

1. a color for better visual aspect
2. a blank or space for easier copy/paste operations

Paste this into your Bash shell:

tee ~/.pyrc <<EOF
#!/usr/bin/env python3
import sys

# You also need \x01 and \x02 to separate escape sequence, due to:
# https://stackoverflow.com/a/9468954/1147688
sys.ps1='\x01\x1b[1;49;33m\x02>>>\x01\x1b[0m\x02 '  # bright yellow
sys.ps2='\x01\x1b[1;49;31m\x02...\x01\x1b[0m\x02 '  # bright red
EOF

Finally add this line to your ~/.bash_profile:

export PYTHONSTARTUP=~/.pyrc

---

If you're on Windows, use one of these:

# Set it Temperarily (for this session)
$env:PYTHONSTARTUP="C:\Users\<USERNAME>\.pyrc"                                                  

# Set it Locally:  HKEY_CURRENT_USER
[Environment]::SetEnvironmentVariable("PYTHONSTARTUP", 'C:\Users\<USERNAME>\.pyrc', 'User')     

# Set it Globaly: HKEY_LOCAL_MACHINE
[Environment]::SetEnvironmentVariable("PYTHONSTARTUP", 'C:\Users\<USERNAME>\.pyrc', 'Machine')  

# Set it Globaly: HKEY_LOCAL_MACHINE (also in CMD)
setx /m PYTHONSTARTUP "%HOME%\.pyrc"                                                        

---

Enjoy!

You remember correctly.

It's in the sys module (sys.ps1 & sys.ps2):

Strings specifying the primary and secondary prompt of the interpreter. These are only defined if the interpreter is in interactive mode. Their initial values in this case are '>>> ' and '... '. If a non-string object is assigned to either variable, its str() is re-evaluated each time the interpreter prepares to read a new interactive command; this can be used to implement a dynamic prompt.

For example:

   >>> import sys
   >>> sys.ps1 = "3.5>>> "
   3.5>>> sys.ps2 = "3.5... "
   3.5>>>