python add row to dataframe

: Cur.scroll (n), or, Cur.scroll (n, "relative"): means to move up or down relative to the current position, n is a positive number, to indicate downward (forward), N to a negative number, to indicate up (backwards) There is another way, You can achieve "absolute" movement, not "relative" movement: Add an argument to "absolute" specifically remind reader note that in Python, sequence objects are ordere

Add attributes and generate objects dynamically in python classes. This article will solve the problem one by one through the following aspects: 1. Main Functions of the program 2. Implementation Process 3. Class Definition 4. Use the generator to dynamically update each object and return the object 5. Remove unnecessary characters Using strip 6. rematch matching strings 7. Use timestrptime to extract strin

Use python to import the pymysql database to operate mysql (add, delete, modify, and query) and pythonpymysql Install pymysql first. Run pip install pymysql on the command line. After installation, connect to the mysql database: Import pymysql. cursors '''Connect to database''' # Use the pymysql command to connect to the database Connection = pymysql. connect (host = '192. 0.0.1 ', # IP address of the datab

# This is a learning note for the Liaoche teacher Python tutorial1. OverviewAdorners can help us add extra functionality to objects that already existAn adorner is essentially a Python function that allows other functions to add extra functionality without any code changes, and the return value of the adorner is also a

Requirements:Put the data inside the App_student.xls,1, if this line of data has garbled (and contains?), then delete2, plus a column, whether graduation3, if the class is a Scorpio, graduation this column is written as a graduate4, the other classes are written not graduatedRaw DATA:implementation:ImportXlrd,xlwtexcel_name='App_student.xls'defDelete_messy_code (Excel_name):#Remove garbled charactersBook =Xlrd.open_workbook (excel_name) sheet=book.sheet_by_index (0) data= [] forIinchRange (s

) self.dr.execute_script (JS) #定义获取文章post-id methods defcreate_post_and_return_its_id (self,title,content): self.Create_post (title,content) #调用新增文章方法, prepare for the post-id of the post that was added later in the article tokens=self.dr.find_element_by_css_selector (' #TipsPanel_LinkEdit '). Get_attribute (' href '). Split (' = ') returntokens[-1]# All articles correspond to unique post-id #验证删除新增的文章 deftest_delete_post_success ( Self): ' Verify the deletion of the newly added post ' sel

This article describes how to add excel Data to mongodb using python. To import data to mongodb, we have introduced the pymongo and xlrd packages. For more information, see the pymongo package, use the xlrd package to read excel Data. Because of the different data structures, convert the excel format data to json format data. Due to Encoding Problems, "TypeError: 'str' object does not support item assignmen