I have python code I need help with. When decrypting, it is just returning whatever I am inputting. It encrypts and decrypts by file input. Usage is "python script.py $-$e input.txt $"$ for encryption and $-$d for decryption. It is a double transposition cipher, need help fixing it to where it outputs the proper decrypted message. Encryption works just fine.

# Global constants

NUM$\_$ROWS $=6$

NUM$\_$COLS $=4$

ROW$\_$TRANSPOSITION $=[3,5,0,2,1,4]$

COL$\_$TRANSPOSITION $=[3,2,0,1]$

def encrypt$($text$)$:

table $=[[\text{'}\text{'}$ for $\_$ in range$($NUM$\_$COLS$)]$ for $\_$ in range$($NUM$\_$ROWS$)]$

index $=0$

for $i$ in range$($NUM$\_$ROWS$)$:

for $j$ in range$($NUM$\_$COLS$)$:

if index $$ len$($text$)$:

table $[i][j]=$ text$[$index$]$

index $+=1$

else:

table$[$i$][$j$]=\text{'}\text{'}$ # Padding if text length is less than table size

# Transpose rows

table $=[$table $[$i$]$ for $i$ in ROW$\_$TRANSPOSITION$]$

# Transpose columns

table $=[$list $($row $[$i$]$ for $i$ in COL$\_$TRANSPOSITION$)$ for row in table$]$

# Output encrypted text

for row in table:

print$("".$join$($row$),$ end$=\text{'}\text{'})$

def decrypt$($text$)$:

table $=[[\text{'}\text{'}$ for $\_$ in range$($NUM$\_$COLS$)]$ for $\_$ in range$($NUM$\_$ROWS$)]$

index $=0$

for $i$ in ROW$\_$TRANSPOSITION:

for $j$ in COL$\_$TRANSPOSITION:

table index$]$

index $+=1$

# Reverse column transposition

table $=[$list$($row$[$i$]$ for $i$ in sorted$($range$($NUM$\_$COLS$),$ key$=$lambda x: COL$\_$TRANSPOSITION.index$($x$)))$ for row in table$]$

# Reverse row transposition

table table $[$i$]$ for $i$ in ROW$\_$TRANSPOSITION$]$

# Output decrypted text

for row in table:

print$("\text{'}.$join$($row$),$ end$=\text{'}\text{'})$

def main$()$:

if len$($sys$.$argv$)!=3$ or sys$.$argv$[1]$ not in $[\text{'}-$e$\text{'},\text{'}-$d$\text{'}]$:

print$("$Usage: python

script.py $[-$e $|-$d$]=r$