karmstrong ask in the Python chat if any one was farmilar with converting a for loop in C to Python. Here is a program in python that will do it for you!
Thank You!
Converting C loops to Python
Gribouillis commented: interesting attempt +14
testCLoop = "for(int a=10;a<20;a=a+1)"
cLoop = input("Enter C For Loop:\t")
#cLoop = testCLoop
cLoopStriped = cLoop.strip("for(").strip(")")
cLoopList = cLoopStriped.split(";")
print(cLoopList)
cLoopListInit = str(cLoopList[0]).split("=")
if "<" in cLoopList[1]:
cLoopListCondition = cLoopList[1].split("<")
elif ">" in cLoopList[1]:
cLoopListCondition = cLoopList[1].split(">")
if "+" in cLoopList[2]:
cLoopListAdd = cLoopList[2].split("+")
condition = "+"
elif "-" in cLoopList[2]:
cLoopListAdd = cLoopList[2].split("-")
condition = "-"
pythonLoop = "for x in range("
pythonLoop += str(cLoopListInit[1]+", ")
pythonLoop += str(cLoopListCondition[1]+", ")
if condition == "+":
pythonLoop += str(cLoopListAdd[1])
if condition == "-":
pythonLoop += str("-"+cLoopListAdd[1])
pythonLoop += ")"
print(pythonLoop)
Gribouillis 1,391 Programming Explorer Team Colleague
Instead of parsing the C code by hand, you could start from an ast produced by an existing C parser written in python: module pycparser. Here is an example, adapted from pycparser's example explore_ast.py
#-----------------------------------------------------------------
# see pycparser explore_ast.py for complete example
#-----------------------------------------------------------------
from __future__ import print_function
import sys
from pycparser import c_parser, c_ast
text = """
void foo(){
for(int a=10;a<20;a=a+1)
;
}
"""
parser = c_parser.CParser()
ast = parser.parse(text, filename='<none>')
ast.show()
""" my output -->
FileAST:
FuncDef:
Decl: foo, [], [], []
FuncDecl:
TypeDecl: foo, []
IdentifierType: ['void']
Compound:
For:
DeclList:
Decl: a, [], [], []
TypeDecl: a, []
IdentifierType: ['int']
Constant: int, 10
BinaryOp: <
ID: a
Constant: int, 20
Assignment: =
ID: a
BinaryOp: +
ID: a
Constant: int, 1
EmptyStatement:
"""
Starting from an ast gives a robust base for translation to python.
DragonMastur 23 Light Poster
Thanks! Never knew about that. See you learn some thing new ever day!
vegaseat 1,735 DaniWeb's Hypocrite Team Colleague
In Python range() will do the work for you, no reason to go back to the medieval times. Even the newer curly brace languages have gone to on "in range" iterative approach.
megaflo 29 Newbie Poster
Note that the minute you see code like for i in range(len(items)) in Python you should sense a code smell.
vegaseat 1,735 DaniWeb's Hypocrite Team Colleague
You should sense a "code smell" because the code should befor item in items
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