Pandabear

Interpreter for language like BASIC written in python3.

Installation

Install this project with git

  git clone https://github.com/TechWhizKid/Pandabear.git

Click on this link to download full project zipped or click on this link to get Pandabear.exe (zipped).

Usage/Examples

You can run help or /? to get help information.

• Syntax are similar to python

# Only works with double quotes (")
Print("Hello World!")  # :Hello World!
Print((5+5)*2+1)       # :21
#-------------------------------------
Set a = "Hello World!"
Print(a)               # :Hello World!

• Run scripts using Run()

# Note: Using single quotes (') will show error.
Run("example.pb")

• You can get print return by using Print_ret()

Print_ret("Hi there.") # :"Hi there."

• Comments can be added using #

# This is a Comment
Print("Look up!")      # :Look up!

• Variables are created using keyword Set

Set var = 10           # :10; 0

• Multiple variables can be declared in one line by using ;

Set var1 = 5; Set var2 = 10

• There is a built in variable named Math_pi

Print(Math_pi) # Returns "3.141592653589793"
# Just entering "Math_pi" also works
Math_pi

• Lists can be created using the same keyword (Set)

Set list = ["a", "b"]; Set list2 = ["c", 1, 2]

• Items can be added to list using Append()

Set list = [1, 2, 3, 4]
Append(list, 5)   # :[1, 2, 3, 4, 5]

• pop() can be used to remove items from list

Set list = [1, 2, 3, 4]
Pop(list, 0)  # This will remove '1' from the list
#--Example 2--------------------------------------
Set list = [1, 2, 3, 4]
Pop(list, -1) # This will remove '4' from the list

• List can be combined using Extend()

Set a = [1, 2, 3]
Set b = [4, 5, 6]
Extend(a, b)     # :[1, 2, 3, 4, 5, 6]
# Now a is = [1, 2, 3, 4, 5, 6] but b is unchanged.

• To check the length of a list Len() can be used

Set list = [1, 2, 3, 4, 5]
Len(list)        # :5

• User input can be taken using Input()

# Takes user input and does not take any arguments
Set a = Input()
Print(a)         # Print the input

• Integer input can be taken using Input_int()

# This will prompt user to enter again if input was not "Int"
Set b = Input_int()
Print(b)         # Print the int input

• Screen can be cleared using Clear() & Cls()

Clear()
Cls()

• There are ways to check the type of object using different keywords

Is_int(10)      # Variables can be used as args
Is_str("Hi!")   # returns "0" if False
#----------------------------------------------
Set list = [1, 2, 3]
Is_list(list)   # Returns "1" if True
#----------------------------------------------
Func main() -> Print("Hello World!")
Is_func(main)   # Returns "1" if True else returns "0"

• If..Else statement (If, Elsif, Else, Then, And, Or, End)

If statement multiline:

Set a = 10; Set b = 10
If a == b Then
	Print("a and b are equal")
	Print("Goodbye!")
End

If statement single line:

Set a = 10; Set b = 10
If a == b Then Print("a & b are equal") And Print("Goodbye!")
# "End" should not be used in this case

Elsif statement multiline:

Set a = 10; Set b = 8
If a == b Then
	Print("a & b are equal")
Elsif a > b Then
	Print("a is > b")
End

Elsif statement single line:

Set a = 10; Set b = 8
If a == b Then Print("a=b") Elsif a > b Then Print("a is > b")

Else statement multiline:

Set a = 10; Set b = 12
If a == b Then
	Print("a = b")
Elsif a > b Then
	Print("a > b")
Else
	Print("a < b")
End

Elsif statement single line:

Set a = 10; Set b = 12
If a == b Then Print("a = b") Else Print("a < b")
# Elsif can be used in the middle too

Keywords And and Or

# Use of "And" Keyword
Set a = 10; Set b = 10; Set c = 12
If a == 10 And a == b Then Print("Correct")

# Use "Or" Keyword
If a == c Or a == b Then Print("Correct")
# Elsif and Else can be used too

single line summary:

If <case> Then <task> Elsif <case> Then <task> Else <task>

multiline line summary:

If <case> Then 
	<task> 
Elsif <case> Then 
	<task> 
Else 
	<task>
End

• Functions are created using keyword Func

single line function uses -> as start

Func main() -> Print("Hello") And Print("World")
main() # calling function by its name

multiline line functions has to end with keyword End

Func main()
	Print("Hello")
	Print("World")
End
main()

• Loops (While, For)

While loops:

# Multiline "While loop" example
Set i = 0
While i < 10000 Then
    Set i = i + 1
    End

# Single line "While loop" example
Set i = 0
While i < 10000 Then Set i = i + 1

# This loop will not stop until exited
While True Then 
    Continue

# This is a more practical use
Set a = 0
While True Then
    If a == 10 Then
        Print("'a' is equal to '10'")
        Break
    Else Set a = a + 1
End

For loops:

Set res = 1
For i = 1 To 6 Then Set res = res * i

Set res = 1
For i = 1 To 6 Then 
    Set res = res * i
End
res # This will print the res

Set res = 120
For i = 5 To 0 Step -1 Then Set res = res * i
Print(res)

Set res = 120
For i = 5 To 0 Step -1 Then
    Set res = res * i
End
Print(res)

Pandabear Logo

License

MIT