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错误的输入解析错误？(Bad input parse error?)

 我正在尝试编写一个程序来帮助我处理一些数字用于我的物理作业。 程序本身变得冗长，我只知道Python的基础知识，所以我相信很多事情都可以做得更容易。 我的问题是，当我尝试运行程序时，它告诉我第133行有一个错误，但我无法弄清楚代码中的错误。 
 

def initial_momentum_cm_2(m2, m2U, Vcmi2, Vcmi2U, Vcm, VcmU, Vi2, Vi2U, Pi1, Pi1U, Pi2, Pi2U, m1, m1U):
    Pcmi2 = Vcmi2*m2
    Pcmi2U = (((Vi1U+(((Pi1U+Pi2U)/(Pi1+Pi2))+((m1U+m2U))+(m2U/m2))*Pcmi2
    return Pcmi2, Pcmi2U
intitial_momentum_cm_2 = initial_momentum_cm_2(m2, m2U, Vcmi2, Vcmi2U, Vcm, VcmU, Vi2, Vi2U, Pi1, Pi1U, Pi2, Pi2U, m1, m1U)

 

 线133是Pcmi2U = (((Vi1U+(((Pi1U+Pi2U)/(Pi1+Pi2))+((m1U+m2U))+(m2U/m2))*Pcmi2但是，我认为整个块是正确的请帮助，谢谢。 
 

print "results given in (value, uncertainty) form"
print "cmf refers to center of mass reference frame"
w = float(raw_input("Enter width of index card (m))"))
wU = float(raw_input("Enter uncertainty of index card"))
m1 = float(raw_input("Enter mass of cart 1 (red) (g)"))
m1U = float(raw_input("Enter uncertainty of m1"))
Vi1 = float(raw_input("Enter initial velocity of cart 1 (m/s):"))
Vi1U = float(raw_input("Enter uncertainty of Vi1"))
Vf1 = float(raw_input("Enter final velocity of cart 1 (m/s):"))
Vf1U = float(raw_input("Enter uncertainty of Vf1"))
m2 = float(raw_input("Enter mass of cart 2 (blue) (g):"))
m2U = float(raw_input("Enter uncertainty of m2"))
Vi2 = float(raw_input("Enter initial velocity of cart 2 (m/s)"))
Vi2U = float(raw_input("Enter uncertainty of Vi2"))
Vf2 = float(raw_input("Enter final velocity of cart 2 (m/s):"))
Vf2U = float(raw_input("Enter uncertainty of Vf2"))
wRU = wU/w 
#RU=Relative Uncertainty
print ("width uncertainty:"), wRU,("m")

#Fix 1: Added "global" command in order to be able to access
# a variable inside a funtion.


#Initial and final momenta of each mass in lab reference frame
def initial_momentum_1(m1, m1U, Vi1, Vi1U):
    global Pi1
    global Pi1U
    Pi1 = m1*Vi1
    Pi1U = Pi1*wRU
    return Pi1, Pi1U
initial_momentum_1 = initial_momentum_1(m1, m1U, Vi1, Vi1U)

def final_momentum_1(m1, m1U, Vf1, Vf1U):
    global Pf1
    global Pf1U
    Pf1 = m1*Vf1
    Pf1U = Pf1*wRU
    return Pf1, Pf1U
final_momentum_1 = final_momentum_1(m1, m1U, Vf1, Vf1U)

def initial_momentum_2(m2, m2U, Vi2, Vi2U):
    global Pi2
    global Pi2U
    Pi2 = m2*Vi2
    Pi2U = Pi2*wRU
    return Pi2, Pi2U
initial_momentum_2 = initial_momentum_2(m2, m2U, Vi2, Vi2U)

def final_momentum_2(m2, m2U, Vf2, Vf2U):
    global Pf2
    global Pf2U
    Pf2 = m2*Vf2
    Pf2U = Pf2*wRU
    return Pf2, Pf2U
final_momentum_2 = final_momentum_2(m2, m2U, Vf2, Vf2U)

print "Initial momentum 1:",initial_momentum_1,"nMs"
print "Final momentum 1:",final_momentum_1,"nMs"
print "Initial momentum 2:",initial_momentum_2,"nMs"
print "Final momentum 2:",final_momentum_2,"nMs"



#Velocity of center of mass in lab reference frame
def Velocity_Center_of_Mass(Pi1, Pi1U, Pi2, Pi2U, m1, m1U, m2, m2U):
    global Vcm
    global VcmU
    Vcm = (Pi1+Pi2)/(m1+m2)
    VcmU = (((Pi1U+Pi2U)/(Pi1+Pi2))+((m1U+m2U)/(m1+m2)))*Vcm
    return Vcm, VcmU
Velocity_Center_of_Mass = Velocity_Center_of_Mass(Pi1, Pi1U, Pi2, Pi2U, m1, m1U, m2, m2U)

print "Velocity of center of mass:",Velocity_Center_of_Mass,"m/s"



#Initial and final velocities of each mass in center-of-mass reference frame
def Vcmi1(Vcm, VcmU, Vi1, Vi1U, Pi1, Pi1U, Pi2, Pi2U, m1, m1U, m2, m2U):
    global Vcmi1
    global Vcmi1U
    Vcmi1 = Vi1-Vcm
    Vcmi1U = (Vi1U+(((Pi1U+Pi2U)/(Pi1+Pi2))+((m1U+m2U)/(m1+m2))))*Vcmi1
    return Vcmi1, Vcmi1U
Vcmi1 = Vcmi1(Vcm, VcmU, Vi1, Vi1U, Pi1, Pi1U, Pi2, Pi2U, m1, m1U, m2, m2U)

def Vcmf1(Vcm, VcmU, Vf1, Vf1U, Pi1, Pi1U, Pi2, Pi2U, m1, m1U, m2, m2U):
    global Vcmf1
    global Vcmf1U
    Vcmf1 = Vf1-Vcm
    Vcmf1U = (Vi1U+(((Pi1U+Pi2U)/(Pi1+Pi2))+((m1U+m2U)/(m1+m2))))*Vcmf1
    return Vcmf1, Vcmf1U
Vcmf1 = Vcmf1(Vcm, VcmU, Vf1, Vf1U, Pi1, Pi1U, Pi2, Pi2U, m1, m1U, m2, m2U)

def Vcmi2(Vcm, VcmU, Vi2, Vi2U, Pi1, Pi1U, Pi2, Pi2U, m1, m1U, m2, m2U):
    global Vcmi2
    global Vcmi2U
    Vcmi2 = Vi2-Vcm
    Vcmi2U = (Vi1U+(((Pi1U+Pi2U)/(Pi1+Pi2))+((m1U+m2U)/(m1+m2))))*Vcmi2
    return Vcmi2, Vcmi2U
Vcmi2 = Vcmi2(Vcm, VcmU, Vi2, Vi2U, Pi1, Pi1U, Pi2, Pi2U, m1, m1U, m2, m2U)

def Vcmf2(Vcm, VcmU, Vf2, Vf2U, Pi1, Pi1U, Pi2, Pi2U, m1, m1U, m2, m2U):
    global Vcmf2
    global Vcmf2U
    Vcmf2 = Vf2-Vcm
    Vcmf2U = (Vi1U+(((Pi1U+Pi2U)/(Pi1+Pi2))+((m1U+m2U)/(m1+m2))))*Vcmf2
    return Vcmf2, Vcmf2U
Vcmf2 = Vcmf2(Vcm, VcmU, Vf2, Vf2U, Pi1, Pi1U, Pi2, Pi2U, m1, m1U, m2, m2U)

print "Initial velocity 1 in cmf:",Vcmi1,"m/s"
print "Final velocity 1 in cmf:",Vcmf1,"m/s"
print "Initial velocity 2 in cmf:",Vcmi2,"m/s"
print "Final velocity 2 in cmf:",Vcmf2,"m/s"


#Initial and final momenta of each mass in center-of-mass frame
def initial_momentum_cm_1(m1, m1U, Vcmi1, Vcmi1U, Vcm, VcmU, Vf2, Vf2U, Pi1,      Pi1U, Pi2, Pi2U, m2, m2U):
    Pcmi1 = Vcmi1*m1
    Pcmi1U = (((Vi1U+(((Pi1U+Pi2U)/(Pi1+Pi2))+((m1U+m2U)/(m1+m2)))))+    (m1U/m1))*Pcmi1
    return Pcmi1, Pcmi1U
initial_momentum_cm_1 = initial_momentum_cm_1(m1, m1U, Vcmi1, Vcmi1U, Vcm,     VcmU, Vf2, Vf2U, Pi1, Pi1U, Pi2, Pi2U, m2, m2U)

def final_momentum_cm_1(m1, m1U, Vcmf1, Vcmf1U, Vcm, VcmU, Vf1, Vf1U, Pi1, Pi1U, Pi2, Pi2U, m2, m2U):
    Pcmf1 = Vcmf1*m1
    Pcmf1U = (((Vi1U+(((Pi1U+Pi2U)/(Pi1+Pi2))+((m1U+m2U)/(m1+m2)))))+(m1U/m1))*Pcmf1
    return Pcmf1, Pcmf1U
final_momentum_cm_1 = final_momentum_cm_1(m1, m1U, Vcmf1, Vcmf1U, Vcm, VcmU, Vf1, Vf1U, Pi1, Pi1U, Pi2, Pi2U, m2, m2U)

def initial_momentum_cm_2(m2, m2U, Vcmi2, Vcmi2U, Vcm, VcmU, Vi2, Vi2U, Pi1,   Pi1U, Pi2, Pi2U, m1, m1U):
    Pcmi2 = Vcmi2*m2
    Pcmi2U = Vi1U+(((Pi1U+Pi2U)/(Pi1+Pi2))+((m1U+m2U))+(m2U/m2))*Pcmi2
    return Pcmi2, Pcmi2U
intitial_momentum_cm_2 = initial_momentum_cm_2(m2, m2U, Vcmi2, Vcmi2U, Vcm, VcmU, Vi2, Vi2U, Pi1, Pi1U, Pi2, Pi2U, m1, m1U)

def final_momentum_cm_2(m2, m2U, Vcmf2, Vcmf2U,Vcm, VcmU, Vf2, Vf2U, Pi1,     Pi1U, Pi2, Pi2U, m1, m1U):
    Pcmf2 = Vcmf2*m2
    Pcmf2U = (((Vi1U+(((Pi1U+Pi2U)/(Pi1+Pi2))+((m1U+m2U)/(m1+m2)))))+(m2U/m2))*Pcmf2
    return Pcmf2, Pcmf2U
final_momentum_cm_2 = final_momentum_cm_2(m2, m2U, Vcmf2, Vcmf2U,Vcm, VcmU, Vf2, Vf2U, Pi1, Pi1U, Pi2, Pi2U, m1, m1U)

print "Initial momentum 1 in cmf:", initial_momentum_cm_1, "nMs"
print "Final momentum 1 in cmf:",final_momentum_cm_1,"nMs"
print "Initial momentum 2 in cmf:",intitial_momentum_cm_2,"nMs"
print "Final momentum 2 in cmf:",final_momentum_cm_2,"nMs"



#Momentum of center of mass in center-of-mass reference frame
def momentum_center_of_mass(m1, m1U, m2, m2U, Vcm, VcmU):
    Pcm = (m1+m2)*Vcm
    PcmU = (((m1U+m2U)/(m1_m2))+(VcmU/Vcm))*Pcm
    return Pcm, PcmU
momentum_center_of_mass = momentum_center_of_mass(m1, m1U, m2, m2U, Vcm, VcmU)

print "Momentum of center of mass in cmf:",momentum_center_of_mass,"nMs"


I'm trying to write a program that will help me crunch some numbers for my physics homework. The program itself became lengthy and I only know the basics of Python so I'm sure many things could have been done easier. My problem is that when I try to run the program, it tells me there is an error in line 133, but I cannot figure out what's wrong in the code.
 

def initial_momentum_cm_2(m2, m2U, Vcmi2, Vcmi2U, Vcm, VcmU, Vi2, Vi2U, Pi1, Pi1U, Pi2, Pi2U, m1, m1U):
    Pcmi2 = Vcmi2*m2
    Pcmi2U = (((Vi1U+(((Pi1U+Pi2U)/(Pi1+Pi2))+((m1U+m2U))+(m2U/m2))*Pcmi2
    return Pcmi2, Pcmi2U
intitial_momentum_cm_2 = initial_momentum_cm_2(m2, m2U, Vcmi2, Vcmi2U, Vcm, VcmU, Vi2, Vi2U, Pi1, Pi1U, Pi2, Pi2U, m1, m1U)

 

Line 133 is Pcmi2U = (((Vi1U+(((Pi1U+Pi2U)/(Pi1+Pi2))+((m1U+m2U))+(m2U/m2))*Pcmi2 However, I believe that this entire block is correct. Help please, and thanks.
 

print "results given in (value, uncertainty) form"
print "cmf refers to center of mass reference frame"
w = float(raw_input("Enter width of index card (m))"))
wU = float(raw_input("Enter uncertainty of index card"))
m1 = float(raw_input("Enter mass of cart 1 (red) (g)"))
m1U = float(raw_input("Enter uncertainty of m1"))
Vi1 = float(raw_input("Enter initial velocity of cart 1 (m/s):"))
Vi1U = float(raw_input("Enter uncertainty of Vi1"))
Vf1 = float(raw_input("Enter final velocity of cart 1 (m/s):"))
Vf1U = float(raw_input("Enter uncertainty of Vf1"))
m2 = float(raw_input("Enter mass of cart 2 (blue) (g):"))
m2U = float(raw_input("Enter uncertainty of m2"))
Vi2 = float(raw_input("Enter initial velocity of cart 2 (m/s)"))
Vi2U = float(raw_input("Enter uncertainty of Vi2"))
Vf2 = float(raw_input("Enter final velocity of cart 2 (m/s):"))
Vf2U = float(raw_input("Enter uncertainty of Vf2"))
wRU = wU/w 
#RU=Relative Uncertainty
print ("width uncertainty:"), wRU,("m")

#Fix 1: Added "global" command in order to be able to access
# a variable inside a funtion.


#Initial and final momenta of each mass in lab reference frame
def initial_momentum_1(m1, m1U, Vi1, Vi1U):
    global Pi1
    global Pi1U
    Pi1 = m1*Vi1
    Pi1U = Pi1*wRU
    return Pi1, Pi1U
initial_momentum_1 = initial_momentum_1(m1, m1U, Vi1, Vi1U)

def final_momentum_1(m1, m1U, Vf1, Vf1U):
    global Pf1
    global Pf1U
    Pf1 = m1*Vf1
    Pf1U = Pf1*wRU
    return Pf1, Pf1U
final_momentum_1 = final_momentum_1(m1, m1U, Vf1, Vf1U)

def initial_momentum_2(m2, m2U, Vi2, Vi2U):
    global Pi2
    global Pi2U
    Pi2 = m2*Vi2
    Pi2U = Pi2*wRU
    return Pi2, Pi2U
initial_momentum_2 = initial_momentum_2(m2, m2U, Vi2, Vi2U)

def final_momentum_2(m2, m2U, Vf2, Vf2U):
    global Pf2
    global Pf2U
    Pf2 = m2*Vf2
    Pf2U = Pf2*wRU
    return Pf2, Pf2U
final_momentum_2 = final_momentum_2(m2, m2U, Vf2, Vf2U)

print "Initial momentum 1:",initial_momentum_1,"nMs"
print "Final momentum 1:",final_momentum_1,"nMs"
print "Initial momentum 2:",initial_momentum_2,"nMs"
print "Final momentum 2:",final_momentum_2,"nMs"



#Velocity of center of mass in lab reference frame
def Velocity_Center_of_Mass(Pi1, Pi1U, Pi2, Pi2U, m1, m1U, m2, m2U):
    global Vcm
    global VcmU
    Vcm = (Pi1+Pi2)/(m1+m2)
    VcmU = (((Pi1U+Pi2U)/(Pi1+Pi2))+((m1U+m2U)/(m1+m2)))*Vcm
    return Vcm, VcmU
Velocity_Center_of_Mass = Velocity_Center_of_Mass(Pi1, Pi1U, Pi2, Pi2U, m1, m1U, m2, m2U)

print "Velocity of center of mass:",Velocity_Center_of_Mass,"m/s"



#Initial and final velocities of each mass in center-of-mass reference frame
def Vcmi1(Vcm, VcmU, Vi1, Vi1U, Pi1, Pi1U, Pi2, Pi2U, m1, m1U, m2, m2U):
    global Vcmi1
    global Vcmi1U
    Vcmi1 = Vi1-Vcm
    Vcmi1U = (Vi1U+(((Pi1U+Pi2U)/(Pi1+Pi2))+((m1U+m2U)/(m1+m2))))*Vcmi1
    return Vcmi1, Vcmi1U
Vcmi1 = Vcmi1(Vcm, VcmU, Vi1, Vi1U, Pi1, Pi1U, Pi2, Pi2U, m1, m1U, m2, m2U)

def Vcmf1(Vcm, VcmU, Vf1, Vf1U, Pi1, Pi1U, Pi2, Pi2U, m1, m1U, m2, m2U):
    global Vcmf1
    global Vcmf1U
    Vcmf1 = Vf1-Vcm
    Vcmf1U = (Vi1U+(((Pi1U+Pi2U)/(Pi1+Pi2))+((m1U+m2U)/(m1+m2))))*Vcmf1
    return Vcmf1, Vcmf1U
Vcmf1 = Vcmf1(Vcm, VcmU, Vf1, Vf1U, Pi1, Pi1U, Pi2, Pi2U, m1, m1U, m2, m2U)

def Vcmi2(Vcm, VcmU, Vi2, Vi2U, Pi1, Pi1U, Pi2, Pi2U, m1, m1U, m2, m2U):
    global Vcmi2
    global Vcmi2U
    Vcmi2 = Vi2-Vcm
    Vcmi2U = (Vi1U+(((Pi1U+Pi2U)/(Pi1+Pi2))+((m1U+m2U)/(m1+m2))))*Vcmi2
    return Vcmi2, Vcmi2U
Vcmi2 = Vcmi2(Vcm, VcmU, Vi2, Vi2U, Pi1, Pi1U, Pi2, Pi2U, m1, m1U, m2, m2U)

def Vcmf2(Vcm, VcmU, Vf2, Vf2U, Pi1, Pi1U, Pi2, Pi2U, m1, m1U, m2, m2U):
    global Vcmf2
    global Vcmf2U
    Vcmf2 = Vf2-Vcm
    Vcmf2U = (Vi1U+(((Pi1U+Pi2U)/(Pi1+Pi2))+((m1U+m2U)/(m1+m2))))*Vcmf2
    return Vcmf2, Vcmf2U
Vcmf2 = Vcmf2(Vcm, VcmU, Vf2, Vf2U, Pi1, Pi1U, Pi2, Pi2U, m1, m1U, m2, m2U)

print "Initial velocity 1 in cmf:",Vcmi1,"m/s"
print "Final velocity 1 in cmf:",Vcmf1,"m/s"
print "Initial velocity 2 in cmf:",Vcmi2,"m/s"
print "Final velocity 2 in cmf:",Vcmf2,"m/s"


#Initial and final momenta of each mass in center-of-mass frame
def initial_momentum_cm_1(m1, m1U, Vcmi1, Vcmi1U, Vcm, VcmU, Vf2, Vf2U, Pi1,      Pi1U, Pi2, Pi2U, m2, m2U):
    Pcmi1 = Vcmi1*m1
    Pcmi1U = (((Vi1U+(((Pi1U+Pi2U)/(Pi1+Pi2))+((m1U+m2U)/(m1+m2)))))+    (m1U/m1))*Pcmi1
    return Pcmi1, Pcmi1U
initial_momentum_cm_1 = initial_momentum_cm_1(m1, m1U, Vcmi1, Vcmi1U, Vcm,     VcmU, Vf2, Vf2U, Pi1, Pi1U, Pi2, Pi2U, m2, m2U)

def final_momentum_cm_1(m1, m1U, Vcmf1, Vcmf1U, Vcm, VcmU, Vf1, Vf1U, Pi1, Pi1U, Pi2, Pi2U, m2, m2U):
    Pcmf1 = Vcmf1*m1
    Pcmf1U = (((Vi1U+(((Pi1U+Pi2U)/(Pi1+Pi2))+((m1U+m2U)/(m1+m2)))))+(m1U/m1))*Pcmf1
    return Pcmf1, Pcmf1U
final_momentum_cm_1 = final_momentum_cm_1(m1, m1U, Vcmf1, Vcmf1U, Vcm, VcmU, Vf1, Vf1U, Pi1, Pi1U, Pi2, Pi2U, m2, m2U)

def initial_momentum_cm_2(m2, m2U, Vcmi2, Vcmi2U, Vcm, VcmU, Vi2, Vi2U, Pi1,   Pi1U, Pi2, Pi2U, m1, m1U):
    Pcmi2 = Vcmi2*m2
    Pcmi2U = Vi1U+(((Pi1U+Pi2U)/(Pi1+Pi2))+((m1U+m2U))+(m2U/m2))*Pcmi2
    return Pcmi2, Pcmi2U
intitial_momentum_cm_2 = initial_momentum_cm_2(m2, m2U, Vcmi2, Vcmi2U, Vcm, VcmU, Vi2, Vi2U, Pi1, Pi1U, Pi2, Pi2U, m1, m1U)

def final_momentum_cm_2(m2, m2U, Vcmf2, Vcmf2U,Vcm, VcmU, Vf2, Vf2U, Pi1,     Pi1U, Pi2, Pi2U, m1, m1U):
    Pcmf2 = Vcmf2*m2
    Pcmf2U = (((Vi1U+(((Pi1U+Pi2U)/(Pi1+Pi2))+((m1U+m2U)/(m1+m2)))))+(m2U/m2))*Pcmf2
    return Pcmf2, Pcmf2U
final_momentum_cm_2 = final_momentum_cm_2(m2, m2U, Vcmf2, Vcmf2U,Vcm, VcmU, Vf2, Vf2U, Pi1, Pi1U, Pi2, Pi2U, m1, m1U)

print "Initial momentum 1 in cmf:", initial_momentum_cm_1, "nMs"
print "Final momentum 1 in cmf:",final_momentum_cm_1,"nMs"
print "Initial momentum 2 in cmf:",intitial_momentum_cm_2,"nMs"
print "Final momentum 2 in cmf:",final_momentum_cm_2,"nMs"



#Momentum of center of mass in center-of-mass reference frame
def momentum_center_of_mass(m1, m1U, m2, m2U, Vcm, VcmU):
    Pcm = (m1+m2)*Vcm
    PcmU = (((m1U+m2U)/(m1_m2))+(VcmU/Vcm))*Pcm
    return Pcm, PcmU
momentum_center_of_mass = momentum_center_of_mass(m1, m1U, m2, m2U, Vcm, VcmU)

print "Momentum of center of mass in cmf:",momentum_center_of_mass,"nMs"


原文：https://stackoverflow.com/questions/35667388
更新时间：2022-06-11 12:06

最满意答案

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