如何添加字典值？

如何添加羣衆說，如果用戶進入異亮氨酸？不能增加羣衆中，DIC不能同時加入如何添加字典值？

#Isotopic masses and their abundance 
C12 = { 'Mass' : 12, 'Percentage' : 98.99 } 
C13 = { 'Mass' : 13.0035,'Percentage' : 1.1 } 
N14 = { 'Mass' : 14.003074,'Percentage' : 99.632 } 
N15 = { 'Mass' : 15.000108 ,'Percentage' : 0.368 } 
H1 = { 'Mass' : 1.007825,'Percentage' : 99.99 } 
H2 = { 'Mass' : 2.014102,'Percentage' : 0.015 } 
O16 = { 'Mass' : 15.994915,'Percentage' : 99.76 } 
O17 = { 'Mass' : 16.999131,'Percentage' : 0.038 } 
O18 = { 'Mass' : 17.999159,'Percentage' : 0.2 } 
S32 = {'Mass':31.972072,'Percentage':95.02} 
S33 = {'Mass':32.971459,'Percentage':0.75} 
S34 = {'Mass':33.967868,'Percentage':4.21} 
S36 = {'Mass':35.967079,'Percentage' :0.020} 


C6H13NO2 = (C12,C12,C12,C12,C12,C13,H1,H1,H1,H1,H1,H1,H1,H1,H1,H1,H1,H1,H2,N14,O16,O17) 
C6H14N2O2 = (C12,C12,C12,C12,C12,C13,H1,H1,H1,H1,H1,H1,H1,H1,H1,H1,H1,H1,H1,H2,N14,N15,O16,O17) 
C5H11NO2S =(C12,C12,C12,C12,C13,H1,H1,H1,H1,H1,H1,H1,H1,H1,H1,H2,N14,O16,O17,S32) 
C9H11NO2 = (C12,C12,C12,C12,C12,C12,C12,C12,C13,H1,H1,H1,H1,H1,H1,H1,H1,H1,H1,H2,N14,O16,O17) 
C4H9NO3 =(C12,C12,C12,C13,H1,H1,H1,H1,H1,H1,H1,H1,H2,N14,O16,O17,O18) 
C11H12N2O2 =(C12,C12,C12,C12,C12,C12,C12,C12,C12,C13,H1,H1,H1,H1,H1,H1,H1,H1,H1,H1,H1,H2,N14,N15,O16,O17) 
C5H11NO2 = (C12,C12,C12,C12,C13,H1,H1,H1,H1,H1,H1,H1,H1,H1,H1,H2,N14,O16,O17) 
C6H14N4O2= (C12,C12,C12,C12,C12,C13,H1,H1,H1,H1,H1,H1,H1,H1,H1,H1,H1,H1,H1,H2,N14,N14,N14,N15,O16,O17) 
C6H9N3O2= (C12,C12,C12,C12,C12,C13,H1,H1,H1,H1,H1,H1,H1,H1,H2,N14,N14,N15,O16,O17) 
C3H7NO2 = (C12,C12,C13,H1,H1,H1,H1,H1,H1,H2,N14,O16,O17) 
C4H8N2O3 = (C12,C12,C12,C13,H1,H1,H1,H1,H1,H1,H1,H2,N14,N15,O16,O17,O18) 
C4H7NO4 = (C12,C12,C12,C13,H1,H1,H1,H1,H1,H1,H2,N14,O16,O16,O17,O18) 
C3H7NO2S= (C12,C12,C13,H1,H1,H1,H1,H1,H1,H2,N14,O16,O17,S32) 
C5H9NO4 = (C12,C12,C12,C12,C13,H1,H1,H1,H1,H1,H1,H1,H1,H2,N14,O16,O16,O17,O18) 
C5H10N2O3 = (C12,C12,C12,C12,C13,H1,H1,H1,H1,H1,H1,H1,H1,H1,H2,N14,N15,O16,O17,O18) 
C2H5NO2 = (C12,C13,H1,H1,H1,H1,H2,N14,O16,O17) 
C5H9NO2 = (C12,C12,C12,C13,C13,H1,H1,H1,H1,H1,H1,H1,H1,H2,N14,O16,O17) 
C3H7NO3 = (C12,C12,C13,H1,H1,H1,H1,H1,H1,H2,N14,O16,O17,O18) 
C9H11NO3 = (C12,C12,C12,C12,C12,C12,C12,C13,H1,H1,H1,H1,H1,H1,H1,H1,H1,H1,H2,N14,O16,O17,O18) 




#amino acids and their molecular formulas 
aminoacid = {'Isoleucine': C6H13NO2,'Leucine': C6H13NO2,'Lysine': C6H14N2O2,'Methionine': C5H11NO2S, 
'Phenylalanine': C9H11NO2,'Threonine': C4H9NO3,'Tryptophan': C11H12N2O2,'Valine': C5H11NO2, 
'Arginine': C6H14N4O2,'Histidine': C6H9N3O2,'Alanine': C3H7NO2,'Asparagine': C4H8N2O3, 
'Aspartate': C4H7NO4,'Cysteine': C3H7NO2S,'Glutamate': C5H9NO4,'Glutamine': C5H10N2O3,'Glycine': C2H5NO2, 
'Proline': C5H9NO2,'Serine': C3H7NO3,'Tyrosine': C9H11NO3} 





input = raw_input("Get the User value \n") 



#cannot call the mass alone 
for i in aminoacid: 
    if input == 'Isoleucine': 
     print aminoacid['Isoleucine'] 

    elif input =='Leucine': 
     print aminoacid['Leucine'] 

    else: 
     print "Try again" 
     break

有人請幫我叫另一DIC，我想我需要改變輸入的格式？

來源

2014-03-25 user3434415

綜上所述羣衆，只是循環在你的分子，並挑選出每個'Mass'鍵：

def total_mass(molecule): 
    return sum(a['Mass'] for a in molecule)

演示：

>>> total_mass(aminoacid['Isoleucine']) 
134.10862199999997

做了所有aminoacid鍵不循環播放時，你只想要打印有關一個的信息;使用input值，看看是否鍵存在，而不是：

input = raw_input("Get the User value \n") 
if input in aminoacid: 
    molecule = aminoacid[input] 
    print total_mass(molecule)

來源

2014-03-25 17:10:50

爲什麼會出現[「大衆」]這一復位合計（[「質量」]爲在分子） – user3434415

@ user3434415之前的文章：「for」循環將「分子」中列出的每個原子與「a」（對於一個分子中的「a」）結合。這個「a」是指代表分子的字典之一。 'a ['Mass']'然後是該字典中'Mass'鍵的值。 –

如何添加字典值？

回答

相關問題