import re
list_of_strings = ["apple", "orange ca", "pear  sa", "banana    sth"]
list_of_strings = [re.sub(r'\s{2}.*', '', x, flags=re.S) for x in list_of_strings]
print(list_of_strings)
				aW1wb3J0IHJlCmxpc3Rfb2Zfc3RyaW5ncyA9IFsiYXBwbGUiLCAib3JhbmdlIGNhIiwgInBlYXIgIHNhIiwgImJhbmFuYSAgICBzdGgiXQpsaXN0X29mX3N0cmluZ3MgPSBbcmUuc3ViKHInXHN7Mn0uKicsICcnLCB4LCBmbGFncz1yZS5TKSBmb3IgeCBpbiBsaXN0X29mX3N0cmluZ3NdCnByaW50KGxpc3Rfb2Zfc3RyaW5ncyk=