import os

testlines = []
keep_phrases = ["150=2","150=1"]

directory = "C:\temp\test"
for filename in os.listdir(directory):
    with open(os.path.join(directory, filename)) as curfile:
        for line in curfile:
            for phrase in keep_phrases:
                if phrase in line:
                    testlines.append(line)

for line in testlines:
    try:
        date = line.split('|75=')[1].split('|',1)[0]
        print(date)
    except:
        print(line)