updated

Author: vishalsiingh

Merge/Motivational.pdf

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+class Employee:
+  company = "Apple"
+  def show(self):
+    print(f"The name is {self.name} and company is {self.company}")
+
+  @classmethod
+  def changeCompany(cls, newCompany):
+    cls.company = newCompany
+
+
+e1 = Employee()
+e1.name = "Vishal"
+e1.show()
+e1.changeCompany("Tesla")
+e1.show()
+print(Employee.company)

Merge/The Last Train Home.pdf

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+# Class method ko as a constructor kasie use kr skte h 
+class Employee:
+    def __init__(self,name,salary):
+        self.name=name
+        self.salary=salary
+    @classmethod
+    def fromStr(cls,string):
+        return cls(string.split("-")[0],string.split("-")[1])
+e=Employee("Rohit",50000)       
+print(e.name)
+print(e.salary) 
+# if agar data string ke form me diya hoga then 
+string="Vishal-12000"
+# we use split(" ")[] to get 
+# e2=Employee(string.split("-")[0],string.split("-")[1])
+# print(e2.name)
+# print(e2.salary)
+e2=Employee.fromStr(string)
+print(e2.name)
+print(e2.salary)

Merge/Train.pdf

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+# inbuilt functionss
+
+#dir
+x=[1,2,3]
+x=(1,2,3)
+print(dir(x)) #ye returns all the attributes and methods
+print(x.__add__)
+
+
+#__dict__
+class Person:
+    def __init__(self,name,age):
+        self.name=name
+        self.salary=age
+p=Person("john",35)
+print(p.__dict__)
+
+#help
+print(help(Person))

cluster/1.png

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+#parent class ko refer krrta h 
+# child to parent classs
+class Employee:
+  def __init__(self, name, id):
+    self.name = name
+    self.id = id
+
+class Programmer(Employee):
+  def __init__(self, name, id, lang):
+    # self.name = name
+    # self.id = id
+    super().__init__( name, id)
+    self.lang = lang
+
+rohan = Employee("Rohan Das", "420")
+vishal = Programmer("vishal", "2345", "Python")
+print(vishal.name)
+print(vishal.id)
+print(vishal.lang)

cluster/10.png

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+# purpose ki ye special kaam krte h (Random Methods)
+class Employee:
+    def __init__(self,name):
+        self.name= name
+        
+    # name="Vishal"
+    def __len__(self):
+        i=0
+        # return len(self.name)
+        for c in self.name:
+            i=i+1
+        return i
+    def __str__(self):
+        return f" the name of the employee is {self.name} str"
+    def __repr__(self):
+        return f" Emplopyee'{self.name} '"
+    def __call__(self):
+        print("Hey i m good")
+
+
+e=Employee("vishal")
+# print(e.name)
+# print(len(e)) #hmlog __len__ na kr ke direct len se call kie this is magic
+# print(e)
+print(str(e))
+print(repr(e))
+e()

cluster/2.png

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+# child class ke andar jo parent class ka method 
+# aaya usmo change krna
+
+class Shape:
+    def __init__(self,x,y):
+        self.x= x
+        self.y=y
+
+    def area(self):
+        return self.x*self.y
+
+class Circle(Shape):
+    def __init__(self, radius):
+        self.radius=radius
+        super().__init__(radius,radius)
+
+    def area(self):
+        return 3.14*super().area()
+# sq=Shape(5,5)
+# print(sq.area())
+# rec=Shape(5,5)
+# print(rec.area())
+c=Circle(5)
+print(c.area())

cluster/3.png

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+import os
+# os.rename("cluster/bout.txt","cluster/cluster.txt")
+# files = os.listdir("cluster")
+
+files = os.listdir("cluster")
+i = 1
+for file in files:
+  if file.endswith(".png"):
+    print(file)
+    os.rename(f"cluster/{file}", f"cluster/{i}.png")
+    i = i + 1

cluster/4.png

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+from PyPDF2 import PdfWriter
+import os
+pdf_directory = "Merge"
+merger = PdfWriter()
+# files=[file for file in os.listdir("Merge") if file.endswith(".pdf")]
+files = [os.path.join(pdf_directory, file) for file in os.listdir(pdf_directory) if file.endswith(".pdf")]
+for pdf in files:
+    merger.append(pdf)
+output_file = "merged-pdf.pdf"
+merger.write(output_file)
+# merger.write("merged-pdf.pdf")
+merger.close()
+# import os
+# # os.rename("cluster/bout.txt","cluster/cluster.txt")
+# # files = os.listdir("cluster")
+
+# files = os.listdir("Merge")
+# i = 1
+# for file in files:
+#   if file.endswith(".pdf"):
+#     print(file)
+#     os.rename(f"Merge/{file}", f"Merge/{i}.pdf")
+#     i = i + 1