def default(self, ln):
# Forward line starts with ! to system shell
if ln.startswith('!'):
os.system(ln[1:])
return
c, arg, line = self.parseline(ln)
# Check and run command aliases
if c in self.__aliases:
func = getattr(self, 'do_' + self.__aliases[c])
if func: return func(arg)
# See if there is any handler for integer or floating point values
if hasattr(self, 'int_handler'):
try:
return getattr(self, 'int_handler')(int(ln, 0))
except ValueError:
pass
if hasattr(self, 'float_handler'):
try:
return getattr(self, 'float_handler')(float(ln))
except ValueError:
pass
try:
# See if this is a simple expression that can be evaluated
print '= %s' % str(eval_expr.eval_expr(ln))
except:
print_red('Unknown command: "%s". Try to type "help"' % ln)
def default(self, ln):
# Forward line starts with ! to system shell
if ln.startswith('!'):
os.system(ln[1:])
return
c, arg, line = self.parseline(ln)
# Check and run command aliases
if c in self.__aliases:
func = getattr(self, 'do_'+self.__aliases[c])
if func: return func(arg)
# See if there is any handler for integer or floating point values
if hasattr(self, 'int_handler'):
try: return getattr(self, 'int_handler')(int(ln, 0))
except ValueError: pass
if hasattr(self, 'float_handler'):
try: return getattr(self, 'float_handler')(float(ln))
except ValueError: pass
try:
# See if this is a simple expression that can be evaluated
print '= %s'%str(eval_expr.eval_expr(ln))
except: print_red('Unknown command: "%s". Try to type "help"'%ln)
def calculate(self, query):
"""read and eval an expression in string. Return modified string back
with the result."""
# remove stuff from RHS of =
query = re.sub(r' =.*$', '', query)
# substitute commands and variables here.
processed = self.process_commands(query)
processed = self.substitute_variables(processed)
# eval
ans = eval_expr(processed)
# store this ans.
self.VARS["_"] = str(ans)
self.VARS["@ans"] = str(ans)
if query == str(ans):
return "<{0:g}>".format(ans)
else:
return "<{0} = {1:g}>".format(query, ans)