Adding padding to a tkinter widget only on one side

The padding options padx and pady of the grid and pack methods can take a 2-tuple that represent the left/right and top/bottom padding. Here’s an example: import tkinter as tk class MyApp(): def __init__(self): self.root = tk.Tk() l1 = tk.Label(self.root, text=”Hello”) l2 = tk.Label(self.root, text=”World”) l1.grid(row=0, column=0, padx=(100, 10)) l2.grid(row=1, column=0, padx=(10, 100)) app = … Read more

Why does CSS not support negative padding?

I recently answered a different question where I discussed why the box model is the way it is. There are specific reasons for each part of the box model. Padding is meant to extend the background beyond its contents. If you need to shrink the background of the container, you should make the parent container … Read more

Decorating Hex function to pad zeros

Starting with Python 3.6, you can: >>> value = 42 >>> padding = 6 >>> f”{value:#0{padding}x}” ‘0x002a’ for older python versions use the .format() string method: >>> “{0:#0{1}x}”.format(42,6) ‘0x002a’ Explanation: { # Format identifier 0: # first parameter # # use “0x” prefix 0 # fill with zeroes {1} # to a length of n … Read more

Can C arrays contain padding in between elements?

No, there will never be padding in between elements of an array. That is specifically not allowed. The C99 standard calls array types “An array type describes a contiguously allocated nonempty set of objects…”. For contrast, a structure is “sequentially”, not “contiguously” allocated. There might be padding before or after an array within a structure; … Read more

Encrypt and decrypt using PyCrypto AES-256

Here is my implementation, and it works for me with some fixes. It enhances the alignment of the key and secret phrase with 32 bytes and IV to 16 bytes: import base64 import hashlib from Crypto import Random from Crypto.Cipher import AES class AESCipher(object): def __init__(self, key): = AES.block_size self.key = hashlib.sha256(key.encode()).digest() def encrypt(self, … Read more

Padding-bottom/top in flexbox layout

Update September 2020 Firefox and edge have implemented the behaviour from the specs and margin + padding for flex elements are both calculated according to the width of the containing block. Just like block elements. Update February 2018 Firefox and edge have agreed to change their behaviour on top, bottom margin and padding for flex … Read more

ActionBarSherlock – How to set the padding of each actionbar’s icon?

<style name=”AppTheme” parent=”Theme.Sherlock”> <item name=”actionButtonStyle”>@style/MyActionButtonStyle</item> <item name=”android:actionButtonStyle”>@style/MyActionButtonStyle</item> </style> <style name=”MyActionButtonStyle” parent=”Widget.Sherlock.ActionButton”> <item name=”android:minWidth”>32dip</item> <item name=”android:padding”>0dip</item> </style> The default value of android:minWidth for the ActionBar buttons is 56dip. Don’t forget to set @style/AppTheme as the Activity‘s theme.