Hi,
I have jest started learning Python.
I would like to get some help on writing a script that would delete a data of lines only key from array which looks like this :
['192.168.255.1 00:01:02','172.14.0.1 00:0f:01','172.14.0.1 01:ff:dd:34' ,192.168.255.3 00:dd:01:ff
I want delet red data only
Jump to Postif i want to delete red data of only key '172.14' all in from array
You can use vega code for this.
mylist = newlist print(mylist)So now mylist has removed item you want(garbage collection)old mylist do not exits.
Or an another soultion.
Jump to PostReally Pythonic (elegant) ...
mylist = [ '192.168.255.1 00:01:02', '172.14.0.1 00:0f:01', '172.14.0.2 00:0f:01', '172.14.0.3 00:0f:01' '172.14.0.4 01:ff:dd:34', '192.168.255.3 00:dd:01:ff' ] # your exclude substring exclude = '172.14' newlist = [item for item in mylist if not item.startswith(exclude)] print(newlist) """output --> ['192.168.255.1 00:01:02', '192.168.255.3 00:dd:01:ff'] """
You simply form a new list excluding the item that contain a given substring ...
mylist = [
'192.168.255.1 00:01:02',
'172.14.0.1 00:0f:01',
'172.14.0.1 01:ff:dd:34',
'192.168.255.3 00:dd:01:ff'
]
exclude = '172.14.0.1'
newlist = []
for item in mylist:
if exclude not in item:
newlist.append(item)
print(newlist)
"""my result -->
['192.168.255.1 00:01:02', '192.168.255.3 00:dd:01:ff']
"""if i want to delete red data of only key '172.14' all in from array
mylist = [
'192.168.255.1 00:01:02',
'172.14.0.1 00:0f:01',
'172.14.0.2 00:0f:01',
'172.14.0.3 00:0f:01'
'172.14.0.4 01:ff:dd:34',
'192.168.255.3 00:dd:01:ff'
]
if i want to delete red data of only key '172.14' all in from array
You can use vega code for this.
mylist = newlist
print(mylist)So now mylist has removed item you want(garbage collection)old mylist do not exits.
Or an another soultion.
mylist = [
'192.168.255.1 00:01:02',
'172.14.0.1 00:0f:01',
'172.14.0.2 00:0f:01',
'172.14.0.3 00:0f:01'
'172.14.0.4 01:ff:dd:34',
'192.168.255.3 00:dd:01:ff'
]
for item in mylist[:]:
if item.startswith('172'):
mylist.remove(item)
print mylistThe example code will simply change to this ...
mylist = [
'192.168.255.1 00:01:02',
'172.14.0.1 00:0f:01',
'172.14.0.2 00:0f:01',
'172.14.0.3 00:0f:01'
'172.14.0.4 01:ff:dd:34',
'192.168.255.3 00:dd:01:ff'
]
exclude = '172.14' # adjusted to new exclude criteria
newlist = []
for item in mylist:
if exclude not in item:
newlist.append(item)
print(newlist)
"""my result -->
['192.168.255.1 00:01:02', '192.168.255.3 00:dd:01:ff']
"""
Really Pythonic (elegant) ...
mylist = [
'192.168.255.1 00:01:02',
'172.14.0.1 00:0f:01',
'172.14.0.2 00:0f:01',
'172.14.0.3 00:0f:01'
'172.14.0.4 01:ff:dd:34',
'192.168.255.3 00:dd:01:ff'
]
# your exclude substring
exclude = '172.14'
newlist = [item for item in mylist if not item.startswith(exclude)]
print(newlist)
"""output -->
['192.168.255.1 00:01:02', '192.168.255.3 00:dd:01:ff']
"""thank you
We're a friendly, industry-focused community of developers, IT pros, digital marketers, and technology enthusiasts meeting, networking, learning, and sharing knowledge.