[英]DNA to RNA using str.translate()
I'm trying to convert the DNA code into RNA code using Python...我正在尝试使用 Python 将 DNA 代码转换为 RNA 代码......
I write this:我这样写:
print('Digite a sequência DNA a ser transcrita para RNA:')
my_str = raw_input()
print(my_str.replace('T', 'U'))
And it works, but.. now I need to convert A to U , T to A , G to C and C to G ... I looked how I could do it, and did this:它有效,但是..现在我需要将A转换为 U , T 到 A , G 到 C和C 到 G ......我看看我是怎么做到的,然后这样做了:
print('Digite a sequência DNA a ser transcrita para RNA:')
my_str = raw_input()
RNA_compliment = {
ord('A'): 'U', ord('T'): 'A',
ord('G'): 'C', ord('C'): 'G'}
my_str.translate(RNA_compliment)
But I get this error:但我收到此错误:
Traceback (most recent call last):
File "rna2.py", line 15, in <module>
my_str.translate(RNA_compliment)
TypeError: expected a character buffer object
What i did wrong?我做错了什么?
str.maketrans
is a static method, which returns a translation table usable for str.translate()
. str.maketrans
是一个静态方法,它返回一个可用于str.translate()
的转换表。i, j = "ATGC", "UACG"
tbl = str.maketrans(i, j)
my_str = "GUTC"
print(my_str.translate(tbl))
[out]:
'CUAG'
RNA_compliment
RNA_compliment
str.maketrans
accepts one argument as a dictionary str.maketrans
接受一个参数作为字典{ord('A'): 'U', ord('T'): 'A', ord('G'): 'C', ord('C'): 'G'}
ord()
isn't required ord()
不是必需的# dict without ord
RNA_compliment = {'A': 'U', 'T': 'A', 'G': 'C', 'C': 'G'}
tbl2 = i.maketrans(RNA_compliment)
print(my_str.translate(tbl2))
[out]:
'CUAG'
string.maketrans
.string.maketrans
。ord
with a dict
for python3 , not for python2 :ord
与dict
用于python3 ,而不能用于python2 :In [1]: from string import maketrans
In [2]: i, j = "ATGC", "UACG"
In [3]: tbl = maketrans(i,j)
In [4]: my_str = "GUTC"
In [5]: my_str.translate(tbl)
Out[5]: 'CUAG'
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