Checks if functions & keywords exist.

# Check functions & keywords
builtins = [
    "abs","all","any","bin","bool","bytearray","bytes","callable",
    "chr","complex","dict","dir","divmod","enumerate","eval",
    "filter","float","format","getattr","hasattr","hex","id","input",
    "int","isinstance","issubclass","len","list","map","max","min",
    "next","oct","ord","pow","print","range","repr","round","set","setattr",
    "slice","sorted","str","sum","tuple","type","vars","zip",
    "1j","and","as","break","class","continue","def","del","elif","else",
    "except","False","finally","for","from","global","if","import","in",
    "is","lambda","None","nonlocal","not","or","pass","raise","return",
    "True","try","while","with","yield","\n","\t"
]
print("Built-in function exists:")
for name in builtins:
    try:
        obj = eval(name)
        print(name, ": YES ", type(obj), sep="")
    except:
        print(name, ": NO", sep="")