Python实现的科学计算器功能示例
发布时间：2020-05-24 13:53:45 所属栏目：Python 来源：互联网
导读：本文实例讲述了Python实现的科学计算器功能。分享给大家供大家参考，具体如下：
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本文实例讲述了Python实现的科学计算器功能。分享给大家供大家参考，具体如下：
import wx
import re
import math
# begin wxGlade: extracode
# end wxGlade
ans=0
ts=""
class MyFrame(wx.Frame):
def __init__(self,*args,**kwds):
# begin wxGlade: MyFrame.__init__
kwds["style"] = wx.DEFAULT_FRAME_STYLE
wx.Frame.__init__(self,**kwds)
self.text_ctrl_1 = wx.TextCtrl(self,-1,"",style=wx.TE_READONLY)
self.text_ctrl_2 = wx.TextCtrl(self,style=wx.TE_READONLY)
self.button_37 = wx.Button(self,"7")
self.button_38 = wx.Button(self,"8")
self.button_39 = wx.Button(self,"9")
self.button_40 = wx.Button(self,"+")
self.button_41 = wx.Button(self,"-")
self.button_42 = wx.Button(self,"4")
self.button_43 = wx.Button(self,"5")
self.button_44 = wx.Button(self,"6")
self.button_45 = wx.Button(self,"x")
self.button_46 = wx.Button(self,"/")
self.button_47 = wx.Button(self,"1")
self.button_48 = wx.Button(self,"2")
self.button_49 = wx.Button(self,"3")
self.button_50 = wx.Button(self,"(")
self.button_51 = wx.Button(self,")")
self.button_52 = wx.Button(self,"0")
self.button_53 = wx.Button(self,".")
self.button_54 = wx.Button(self,"ans")
self.button_55 = wx.Button(self,"clear")
self.button_56 = wx.Button(self,"=")
self.button_57 = wx.Button(self,"pi")
self.button_58 = wx.Button(self,"e")
self.button_59 = wx.Button(self,"1/x")
self.button_60 = wx.Button(self,"x^2")
self.button_61 = wx.Button(self,"x^y")
self.button_62 = wx.Button(self,"sqrt")
self.button_63 = wx.Button(self,"sin")
self.button_64 = wx.Button(self,"cos")
self.button_65 = wx.Button(self,"tan")
self.button_66 = wx.Button(self,"log")
self.button_67 = wx.Button(self,"ln")
self.button_68 = wx.Button(self,"n!")
self.button_69 = wx.Button(self,"mod")
self.button_70 = wx.Button(self,"int")
self.button_71 = wx.Button(self,"yu")
self.button_72 = wx.Button(self,"|")
self.button_73 = wx.Button(self,"~")
self.button_74 = wx.Button(self,"xor")
self.__set_properties()
self.__do_layout()
self.Bind(wx.EVT_BUTTON,self.bu37,self.button_37)
self.Bind(wx.EVT_BUTTON,self.bu38,self.button_38)
self.Bind(wx.EVT_BUTTON,self.bu39,self.button_39)
self.Bind(wx.EVT_BUTTON,self.bu40,self.button_40)
self.Bind(wx.EVT_BUTTON,self.bu41,self.button_41)
self.Bind(wx.EVT_BUTTON,self.bu42,self.button_42)
self.Bind(wx.EVT_BUTTON,self.bu43,self.button_43)
self.Bind(wx.EVT_BUTTON,self.bu44,self.button_44)
self.Bind(wx.EVT_BUTTON,self.bu45,self.button_45)
self.Bind(wx.EVT_BUTTON,self.bu46,self.button_46)
self.Bind(wx.EVT_BUTTON,self.bu47,self.button_47)
self.Bind(wx.EVT_BUTTON,self.bu48,self.button_48)
self.Bind(wx.EVT_BUTTON,self.bu49,self.button_49)
self.Bind(wx.EVT_BUTTON,self.bu50,self.button_50)
self.Bind(wx.EVT_BUTTON,self.bu51,self.button_51)
self.Bind(wx.EVT_BUTTON,self.bu52,self.button_52)
self.Bind(wx.EVT_BUTTON,self.bu53,self.button_53)
self.Bind(wx.EVT_BUTTON,self.bu54,self.button_54)
self.Bind(wx.EVT_BUTTON,self.bu55,self.button_55)
self.Bind(wx.EVT_BUTTON,self.bu56,self.button_56)
self.Bind(wx.EVT_BUTTON,self.bu57,self.button_57)
self.Bind(wx.EVT_BUTTON,self.bu58,self.button_58)
self.Bind(wx.EVT_BUTTON,self.bu59,self.button_59)
self.Bind(wx.EVT_BUTTON,self.bu60,self.button_60)
self.Bind(wx.EVT_BUTTON,self.bu61,self.button_61)
self.Bind(wx.EVT_BUTTON,self.bu62,self.button_62)
self.Bind(wx.EVT_BUTTON,self.bu63,self.button_63)
self.Bind(wx.EVT_BUTTON,self.bu64,self.button_64)
self.Bind(wx.EVT_BUTTON,self.bu65,self.button_65)
self.Bind(wx.EVT_BUTTON,self.bu66,self.button_66)
self.Bind(wx.EVT_BUTTON,self.bu67,self.button_67)
self.Bind(wx.EVT_BUTTON,self.bu68,self.button_68)
self.Bind(wx.EVT_BUTTON,self.bu69,self.button_69)
self.Bind(wx.EVT_BUTTON,self.bu70,self.button_70)
self.Bind(wx.EVT_BUTTON,self.bu71,self.button_71)
self.Bind(wx.EVT_BUTTON,self.bu72,self.button_72)
self.Bind(wx.EVT_BUTTON,self.bu73,self.button_73)
self.Bind(wx.EVT_BUTTON,self.bu74,self.button_74)
# end wxGlade
self.Show(True)
def __set_properties(self):
# begin wxGlade: MyFrame.__set_properties
self.SetTitle("Python Calculater by CYG")
self.text_ctrl_1.SetMinSize((500,30))
self.text_ctrl_2.SetMinSize((500,50))
self.button_37.SetMinSize((100,60))
self.button_38.SetMinSize((100,60))
self.button_39.SetMinSize((100,60))
self.button_40.SetMinSize((100,60))
self.button_41.SetMinSize((100,60))
self.button_42.SetMinSize((100,60))
self.button_43.SetMinSize((100,60))
self.button_44.SetMinSize((100,60))
self.button_46.SetMinSize((100,60))
self.button_45.SetMinSize((100,60))
self.button_47.SetMinSize((100,60))
self.button_48.SetMinSize((100,60))
self.button_49.SetMinSize((100,60))
self.button_50.SetMinSize((100,60))
self.button_51.SetMinSize((100,60))
self.button_52.SetMinSize((100,60))
self.button_53.SetMinSize((100,60))
self.button_54.SetMinSize((100,60))
self.button_55.SetMinSize((100,60))
self.button_56.SetMinSize((100,60))
self.button_57.SetMinSize((83,50))
self.button_58.SetMinSize((83,50))
self.button_59.SetMinSize((83,50))
self.button_60.SetMinSize((83,50))
self.button_61.SetMinSize((83,50))
self.button_62.SetMinSize((83,50))
self.button_63.SetMinSize((83,50))
self.button_64.SetMinSize((83,50))
self.button_65.SetMinSize((83,50))
self.button_66.SetMinSize((83,50))
self.button_67.SetMinSize((83,50))
self.button_68.SetMinSize((83,50))
self.button_69.SetMinSize((83,50))
self.button_70.SetMinSize((83,50))
self.button_71.SetMinSize((83,50))
self.button_72.SetMinSize((83,50))
self.button_73.SetMinSize((83,50))
self.button_74.SetMinSize((83,50))
# end wxGlade
def __do_layout(self):
# begin wxGlade: MyFrame.__do_layout
sizer_2 = wx.BoxSizer(wx.VERTICAL)
sizer_3 = wx.BoxSizer(wx.VERTICAL)
grid_sizer_1 = wx.GridSizer(4,5,0)
grid_sizer_2 = wx.GridSizer(3,6,0)
sizer_3.Add(self.text_ctrl_2,0)
sizer_3.Add(self.text_ctrl_1,0)
grid_sizer_1.Add(self.button_37,0)
grid_sizer_1.Add(self.button_38,0)
grid_sizer_1.Add(self.button_39,0)
grid_sizer_1.Add(self.button_40,0)
grid_sizer_1.Add(self.button_41,0)
grid_sizer_1.Add(self.button_42,0)
grid_sizer_1.Add(self.button_43,0)
grid_sizer_1.Add(self.button_44,0)
grid_sizer_1.Add(self.button_45,0)
grid_sizer_1.Add(self.button_46,0)
grid_sizer_1.Add(self.button_47,0)
grid_sizer_1.Add(self.button_48,0)
grid_sizer_1.Add(self.button_49,0)
grid_sizer_1.Add(self.button_50,0)
grid_sizer_1.Add(self.button_51,0)
grid_sizer_1.Add(self.button_52,0)
grid_sizer_1.Add(self.button_53,0)
grid_sizer_1.Add(self.button_54,0)
grid_sizer_1.Add(self.button_55,0)
grid_sizer_1.Add(self.button_56,0)
grid_sizer_2.Add(self.button_57,0)
grid_sizer_2.Add(self.button_58,0)
grid_sizer_2.Add(self.button_59,0)
grid_sizer_2.Add(self.button_60,0)
grid_sizer_2.Add(self.button_61,0)
grid_sizer_2.Add(self.button_62,0)
grid_sizer_2.Add(self.button_63,0)
grid_sizer_2.Add(self.button_64,0)
grid_sizer_2.Add(self.button_65,0)
grid_sizer_2.Add(self.button_66,0)
grid_sizer_2.Add(self.button_67,0)
grid_sizer_2.Add(self.button_68,0)
grid_sizer_2.Add(self.button_69,0)
grid_sizer_2.Add(self.button_70,0)
grid_sizer_2.Add(self.button_71,0)
grid_sizer_2.Add(self.button_72,0)
grid_sizer_2.Add(self.button_73,0)
grid_sizer_2.Add(self.button_74,0)
sizer_3.Add(grid_sizer_1,1,wx.EXPAND,0)
sizer_3.Add(grid_sizer_2,0)
sizer_2.Add(sizer_3,0)
self.SetSizer(sizer_2)
sizer_2.Fit(self)
self.Layout()
# end wxGlade
def bu37(self,event): # wxGlade: MyFrame.<event_handler>
global ts
ts+="7"
self.text_ctrl_1.AppendText("7")
event.Skip()
def bu38(self,event): # wxGlade: MyFrame.<event_handler>
global ts
ts+="8"
self.text_ctrl_1.AppendText("8")
event.Skip()
def bu39(self,event): # wxGlade: MyFrame.<event_handler>
global ts
ts += "9"
self.text_ctrl_1.AppendText("9")
event.Skip()
def bu40(self,event): # wxGlade: MyFrame.<event_handler>
global ts
ts += "+"
self.text_ctrl_1.AppendText("+")
event.Skip()
def bu41(self,event): # wxGlade: MyFrame.<event_handler>
global ts
ts += "-"
self.text_ctrl_1.AppendText("-")
event.Skip()
def bu42(self,event): # wxGlade: MyFrame.<event_handler>
global ts
ts += "4"
self.text_ctrl_1.AppendText("4")
event.Skip()
def bu43(self,event): # wxGlade: MyFrame.<event_handler>
global ts
ts += "5"
self.text_ctrl_1.AppendText("5")
event.Skip()
def bu44(self,event): # wxGlade: MyFrame.<event_handler>
global ts
ts += "6"
self.text_ctrl_1.AppendText("6")
event.Skip()
def bu45(self,event): # wxGlade: MyFrame.<event_handler>
global ts
ts += "*"
self.text_ctrl_1.AppendText("*")
event.Skip()
def bu46(self,event): # wxGlade: MyFrame.<event_handler>
global ts
ts += "/"
self.text_ctrl_1.AppendText("/")
event.Skip()
def bu47(self,event): # wxGlade: MyFrame.<event_handler>
global ts
ts += "1"
self.text_ctrl_1.AppendText("1")
event.Skip()
def bu48(self,event): # wxGlade: MyFrame.<event_handler>
global ts
ts += "2"
self.text_ctrl_1.AppendText("2")
event.Skip()
def bu49(self,event): # wxGlade: MyFrame.<event_handler>
global ts
ts += "3"
self.text_ctrl_1.AppendText("3")
event.Skip()
def bu50(self,event): # wxGlade: MyFrame.<event_handler>
global ts
ts += "("
self.text_ctrl_1.AppendText("(")
event.Skip()
def bu51(self,event): # wxGlade: MyFrame.<event_handler>
global ts
ts += ")"
self.text_ctrl_1.AppendText(")")
event.Skip()
def bu52(self,event): # wxGlade: MyFrame.<event_handler>
global ts
ts += "0"
self.text_ctrl_1.AppendText("0")
event.Skip()
def bu53(self,event): # wxGlade: MyFrame.<event_handler>
global ts
ts += "."
self.text_ctrl_1.AppendText(".")
event.Skip()
def bu54(self,event): # wxGlade: MyFrame.<event_handler>
global ts
ts += "ans"
self.text_ctrl_1.AppendText("ans")
event.Skip()
def bu55(self,event): # wxGlade: MyFrame.<event_handler>
global ts
self.text_ctrl_1.Clear()
self.text_ctrl_2.Clear()
ans=0
ts=""
event.Skip()
def minus_operation(self,expresstion):
minus_operators = re.split("-",expresstion)
calc_list = re.findall("[0-9]",expresstion)
if minus_operators[0] == "":
calc_list[0] = '-%s' % calc_list[0]
res = reduce(lambda x,y: float(x) - float(y),calc_list)
return res
def del_duplicates(self,ts):
ts = ts.replace("++","+")
ts = ts.replace("--","-")
ts = ts.replace("+-","-")
ts = ts.replace("--","+")
ts = ts.replace('- -',"+")
return ts
def mutiply_dividend(self,expresstion):
calc_list = re.split("[*/]",expresstion)
operators = re.findall("[*/]",expresstion)
res = None
for index,i in enumerate(calc_list):
if res:
if operators[index - 1] == '*':
res *= float(i)
elif operators[index - 1] == '/':
res /= float(i)
else:
res = float(i)
return res
def special_features(self,plus_and_minus_operators,multiply_and_dividend):
for index,i in enumerate(multiply_and_dividend):
i = i.strip()
if i.endswith("*") or i.endswith("/"):
multiply_and_dividend[index] = multiply_and_dividend[index] + plus_and_minus_operators[index] +
multiply_and_dividend[index + 1]
del multiply_and_dividend[index + 1]
del plus_and_minus_operators[index]
return plus_and_minus_operators,multiply_and_dividend
def minus_special(self,operator_list,calc_list):
for index,i in enumerate(calc_list):
if i == '':
calc_list[index + 1] = i + calc_list[index + 1].strip()
def figure_up(self,ts):
ts = ts.strip("()")
ts = self.del_duplicates(ts)
plus_and_minus_operators = re.findall("[+-]",ts)
multiply_and_dividend = re.split("[+-]",ts)
if len(multiply_and_dividend[0].strip()) == 0:
multiply_and_dividend[1] = plus_and_minus_operators[0] + multiply_and_dividend[1]
del multiply_and_dividend[0]
del plus_and_minus_operators[0]
plus_and_minus_operators,multiply_and_dividend = self.special_features(plus_and_minus_operators,multiply_and_dividend)
for index,i in enumerate(multiply_and_dividend):
if re.search("[*/]",i):
sub_res = self.mutiply_dividend(i)
multiply_and_dividend[index] = sub_res
#print(multiply_and_dividend,plus_and_minus_operators)
final_res = None
for index,item in enumerate(multiply_and_dividend):
if final_res:
if plus_and_minus_operators[index - 1] == '+':
final_res += float(item)
elif plus_and_minus_operators[index - 1] == '-':
final_res -= float(item)
else:
final_res = float(item)
return final_res
def bu56(self,event): # wxGlade: MyFrame.<event_handler>
global ans
global ts
if re.search("pi",ts):
lists = re.findall("pi",ts)
for i in range(0,len(lists)):
te = str(math.pi)
self.text_ctrl_2.SetValue(te)
ts = re.sub("pi",te,ts,1)
#self.text_ctrl_1.SetValue(ts)
if re.search("e",ts):
lists = re.findall("e",len(lists)):
te = str(math.e)
self.text_ctrl_2.SetValue(te)
ts = re.sub("e",1)
#self.text_ctrl_1.SetValue(ts)
if re.search("sin.*)",ts):
lists=re.findall("sin(.+?)",len(lists)):
te=float(lists[i])
te=str(math.sin(te))
self.text_ctrl_2.SetValue(te)
ts=re.sub("sin.*?)",1)
#self.text_ctrl_1.SetValue(ts)
if re.search("cos.*)",ts):
lists = re.findall("cos(.+?)",len(lists)):
te = float(lists[i])
te = str(math.cos(te))
self.text_ctrl_2.SetValue(te)
ts = re.sub("cos.*?)",1)
#self.text_ctrl_1.SetValue(ts)
if re.search("tan.*)",ts):
lists = re.findall("tan(.+?)",len(lists)):
te = float(lists[i])
te = str(math.tan(te))
self.text_ctrl_2.SetValue(te)
ts = re.sub("tan.*?)",1)
#self.text_ctrl_1.SetValue(ts)
if re.search("ln.*)",ts):
lists = re.findall("ln(.+?)",len(lists)):
te = float(lists[i])
te = str(math.log(te))
self.text_ctrl_2.SetValue(te)
ts = re.sub("ln.*?)",1)
#self.text_ctrl_1.SetValue(ts)
if re.search("log.*)",ts):
lists = re.findall("log(.+?)",len(lists)):
te = float(lists[i])
te = str(math.log(te)/math.log(10))
self.text_ctrl_2.SetValue(te)
ts = re.sub("log.*?)",1)
#self.text_ctrl_1.SetValue(ts)
if re.search("sqrt.*)",ts):
lists = re.findall("sqrt(.+?)",len(lists)):
te = float(lists[i])
te = str(math.sqrt(te))
self.text_ctrl_2.SetValue(te)
ts = re.sub("sqrt.*?)",1)
#self.text_ctrl_1.SetValue(ts)
if re.search("int.*)",ts):
lists = re.findall("int(.+?)",len(lists)):
te=float(lists[i])
te=int(te)
te = str(te)
self.text_ctrl_2.SetValue(te)
ts = re.sub("int.*?)",1)
#self.text_ctrl_1.SetValue(ts)
if re.search("ans",ts):
lists = re.findall("ans",len(lists)):
te = str(ans)
self.text_ctrl_2.SetValue(te)
ts = re.sub("ans",1)
#self.text_ctrl_1.SetValue(ts)
if re.search("?−?d∗.?d∗?^?−?d∗.?d∗?",ts):
lists1 = re.findall("?(−?d∗.?d∗?)?^",ts)
lists2 = re.findall("^?(−?d∗.?d∗)?",len(lists1)):
te1=float(lists1[i])
te2=float(lists2[i])
#print te1
#print te2
te=math.pow(te1,te2)
te = str(te)
self.text_ctrl_2.SetValue(te)
ts = re.sub("?[0−9]∗.?[0−9]∗??^?[0−9]∗.?[0−9]∗?",1)
#self.text_ctrl_1.SetValue(ts)
#ts = re.sub("?−?d∗.?d∗?^?−?d∗.?d∗??",1)
if re.search("?−?d∗?!",ts):
lists = re.findall("?(−?d+?)?!",ts)
for i in range(0,len(lists)):
te = float(lists[i])
te = math.factorial(te)
te = str(te)
self.text_ctrl_2.SetValue(te)
ts = re.sub("?−?d+??!",1)
#self.text_ctrl_1.SetValue(ts)
#print ts
flag=True
while flag:
m = re.search("[()]∗",ts)
if m:
sub_res=self.figure_up(m.group())
ts=ts.replace(m.group(),str(sub_res))
else:
ans=self.figure_up(ts)
flag=False
self.text_ctrl_2.SetValue(str(ans))
#ans=
#self.text_ctrl_2.SetValue(str(ans))
# self.text_ctrl_1.Clear()
event.Skip()
def bu57(self,event): # wxGlade: MyFrame.<event_handler>
global ts
ts += "pi"
self.text_ctrl_1.AppendText("pi")
event.Skip()
def bu58(self,event): # wxGlade: MyFrame.<event_handler>
global ts
ts += "e"
self.text_ctrl_1.AppendText("e")
event.Skip()
def bu59(self,event): # wxGlade: MyFrame.<event_handler>
global ts
ts += "^(-1)"
self.text_ctrl_1.AppendText("^(-1)")
event.Skip()
def bu60(self,event): # wxGlade: MyFrame.<event_handler>
global ts
ts += "^2"
self.text_ctrl_1.AppendText("^2")
event.Skip()
def bu61(self,event): # wxGlade: MyFrame.<event_handler>
global ts
ts += "^"
self.text_ctrl_1.AppendText("^")
event.Skip()
def bu62(self,event): # wxGlade: MyFrame.<event_handler>
global ts
ts += "sqrt("
self.text_ctrl_1.AppendText("sqrt(")
event.Skip()
def bu63(self,event): # wxGlade: MyFrame.<event_handler>
global ts
ts += "sin("
self.text_ctrl_1.AppendText("sin(")
event.Skip()
def bu64(self,event): # wxGlade: MyFrame.<event_handler>
global ts
ts += "cos("
self.text_ctrl_1.AppendText("cos(")
event.Skip()
def bu65(self,event): # wxGlade: MyFrame# .<event_handler>
global ts
ts += "tan("
self.text_ctrl_1.AppendText("tan(")
event.Skip()
def bu66(self,event): # wxGlade: MyFrame.<event_handler>
global ts
ts += "log("
self.text_ctrl_1.AppendText("log(")
event.Skip()
def bu67(self,event): # wxGlade: MyFrame.<event_handler>
global ts
ts += "ln("
self.text_ctrl_1.AppendText("ln(")
event.Skip()
def bu68(self,event): # wxGlade: MyFrame.<event_handler>
global ts
ts += "!"
self.text_ctrl_1.AppendText("!")
event.Skip()
def bu69(self,event): # wxGlade: MyFrame.<event_handler>
global ts
ts += "m"
self.text_ctrl_1.AppendText("m")#qumo
event.Skip()
def bu70(self,event): # wxGlade: MyFrame.<event_handler>
global ts
ts += "int("
self.text_ctrl_1.AppendText("int(")
event.Skip()
def bu71(self,event): # wxGlade: MyFrame.<event_handler>
global ts
ts += "u"
self.text_ctrl_1.AppendText("u")#yu
event.Skip()
def bu72(self,event): # wxGlade: MyFrame.<event_handler>
global ts
ts += "|"
self.text_ctrl_1.AppendText("|")#huo
event.Skip()
def bu73(self,event): # wxGlade: MyFrame.<event_handler>
global ts
ts += "n("
self.text_ctrl_1.AppendText("n(")#fei
event.Skip()
def bu74(self,event): # wxGlade: MyFrame.<event_handler>
global ts
ts += "x"
self.text_ctrl_1.AppendText("x")#yihuo
event.Skip()
# end of class MyFrame
if __name__ == "__main__":
app=wx.App(False)
myframe= MyFrame(None)
app.MainLoop()
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