Python 的新手就这么简单。
我正在尝试找到一种方法来查找字符串和变量串联的列表是否是另一个列表的子集。请参阅下面的代码和结果
y = ['test_sam_20190624.csv', 'test_phil_20190624.csv', 'test_bill_20190624.csv', 'test_jess_20190624.csv', 'test_issy_20190624.csv', 'test_clinton_20190624.csv']
x = ['sam', 'jack', 'bill', 'rodry', 'clinton']
print('\nFile list is ')
print(*y, sep="\n")
print('\nNeeded names are ')
print(*x, sep="\n")
datetoday = '20190624'
incl = [p for p in x if 'test'+p+datetoday+'.csv' in y]
not_incl = [p for p in x if 'test'+p+datetoday+'.csv' not in y]
print("\n Included")
print(*incl, sep="\m")
print("\n Not included")
print(*not_incl, sep="\n")
下面给出输出:
File list is
test_sam_20190624.csv
test_phil_20190624.csv
test_bill_20190624.csv
test_jess_20190624.csv
test_issy_20190624.csv
test_clinton__20190624.csv
Needed names are
sam
jack
bill
rodry
clinton
Included
Not included
sam
jack
bill
rodry
clinton
Process finished with exit code 0
但我肯定希望 incl = ['sam' 'bill 'clinton'] 作为输出？输出为:
Included
sam
bill
clinton
Not included
jack
rodry
我哪里错了？也许在字符串的连接中？
请您参考如下方法:
您没有在搜索中包含完整的字符串:
incl = [p for p in x if 'test'+'_'+p+'_'+datetoday+'.csv' in y]
not_incl = [p for p in x if 'test'+'_'+p+'_'+datetoday+'.csv' not in y]
你忘记了查找中的下划线。
[dkennetz@nodecn203 fun]$ python3.5 fun.py
File list is
test_sam_20190624.csv
test_phil_20190624.csv
test_bill_20190624.csv
test_jess_20190624.csv
test_issy_20190624.csv
test_clinton_20190624.csv
Needed names are
sam
jack
bill
rodry
clinton
Included
sam\mbill\mclinton
Not included
jack
rodry
