AttributeError：“str”对象没有属性“readlines”

Question

我的代码有问题。 我收到了这个 AttributeError ，我不知道为什么。 请有人提供一点见解，谢谢！！！ 这是用python 3编写的， 我正在尝试制作图表。

import sys
data = {}
def main():
    filename = sys.argv[1]
    parseFile(filename)
    function()    
def parseFile(fn):
    print("Parsing", fn)
    infile = open(fn, "r")
    for line in infile:
        line = line[:-1]
        tokens = line.split()
        print(tokens)
        if line[0]=="#":
            line.readline() #<-- this is my problem line
        rsid = (tokens[0])
        genotype = (tokens[3])
        data[rsid] = genotype
    infile.close()
main()

# This data file generated by 23andMe at: Wed Jan 26 05:37:08 2011
#
# Below is a text version of your data. Fields are TAB-separated
# Each line corresponds to a single SNP.  For each SNP, we provide its identifier 
# (an rsid or an internal id), its location on the reference human genome, and the 
# genotype call oriented with respect to the plus strand on the human reference 
# sequence.     We are using reference human assembly build 36.  Note that it is possible 
# that data downloaded at different times may be different due to ongoing improvements 
# in our ability to call genotypes. More information about these changes can be found at:
# https://www.23andme.com/you/download/revisions/
# 
# More information on reference human assembly build 36:
# http://www.ncbi.nlm.nih.gov/projects/mapview/map_search.cgi?taxid=9606&build=36
#
# rsid  chromosome  position    genotype
rs4477212   1   72017   AA
rs3094315   1   742429  AA
rs1799883   1   742429  AA
rs3131972   1   742584  GG
rs12124819  1   766409  AA
rs11240777  1   788822  GG
rs6681049   1   789870  CC
rs4970383   1   828418  CC
rs4475691   1   836671  CC
rs7537756   1   844113  AA

Answer 1

属性错误表示readline不是字符串方法。

在这个sn-p中：

for line in infile:
    line = line[:-1]
    tokens = line.split()

我猜想（对吗？）那 line[:-1] 是去掉换行符。如果是这种情况，请尝试以下方法：

for line in infile:
    line = line.strip()
    tokens = line.split()

strip 将去掉换行符和回车符。并且由于您刚刚将行更改为没有换行符的文本，因此您可以使用 line.readline() 删除您的行。

更新： 跳过以#开头的行

for line in infile:
    line = line.strip()
    if line[0]=="#":
        continue
    tokens = line.split()

“跳过”是指您想忽略它们。

此外，为了获得良好的格式，您应该在 parseFile 函数中包含以下行：

def parseFile(fn):
    global data
    ...