python empty dataframe

Python has no character in this type. A string is either a direct amount or a scalar, which means that the Python interpreter does not contain other Python types. Strings are immutable types, which means that changing a string element requires creating a new string. C-language characters and strings the difference between Python's ' \x00 ' and '

Python deletes Empty files and folders, This example describes how to delete Empty files and folders in Python. Share it with you for your reference. The specific implementation method is as follows: #-*-Coding: cp936-*-"" OS. walk () function declaration: walk (top, topdown = True, onerror = None) 1> the top parameter

1 #!/usr/bin/env Python32 #-*-coding:utf-8-*-3 #******* queries the empty directory in the specified directory *********4 #execution Method: Python3 04-1.py + directory name5 #a/b/c/f6 #a/b/f7 #A/b/r/1.txt8 #Python3 1.py a9 #- a/b/c/fTen #a/b/f One ImportSYS A ImportOS, Os.path - - defFind (P): theFS =Os.listdir (P) - ifLen (fs) = =0: - Print(Os.path.abspath (p)) - return + forFinchFS: -PF =Os.path.join (P, f) + if n

the pointer is at the end of the file. If you do read ()at this point, Python discovers that the pointer position is EOF and reads to an empty string.After writing 123, the position of the pointer is 4, still the end of the file, and the file is in memory 123[eof].But it looks like read (), Python is still going to try to jump the pointer from the file header to

Python deletes the source code of an empty folder, Although empty folders do not occupy space, they sometimes seem annoying (don't misunderstand, I'm not obsessive !), So I wrote a small program to delete the empty folder in the current directory. Environment: win7 64-bit; python2.7; IDE pycharm2016.1 The specif

The example in this article describes how Python uses any to determine whether an object is empty. Share to everyone for your reference. The specific implementation code is as follows:Copy the Code code as follows:>>> eth = {"Eth0″:" 192.168.1.1″} >>> any (ETH) True >>> eth = {} >>> any (ETH) False Determines whether the list is empty The traditional way:C

This example describes how Python uses any to determine whether an object is empty. Share to everyone for your reference. The specific implementation code is as follows: Copy Code code as follows: >>> eth = {"Eth0″:" 192.168.1.1″} >>> any (ETH) True >>> eth = {} >>> any (ETH) False Determine if the list is empty The traditional way: Copy Co

Below for you to share a Python Delete non-empty folder instances, has a good reference value, I hope to be helpful to everyone. Come and see it together. Generally delete files using the OS library, and then use Os.remove (path) to complete the deletion, if you delete the empty folder can use Os.removedirs (path), However, if you need to delete the entire fol

Python determines whether the list is empty in the following two ways:Way One:1 list_temp = []2if len (list_temp):3 # The existence value is True 4Else:5 # list_temp is emptyWay two:1 list_temp = []2if list_temp:3 # The existence value is true 4Else:5 # list_temp is emptyBoth of these methods can determine whether the List_temp list is an empty