Python Programming Examples

Working with Text Data

python

import pandas as pd
import numpy as np

s = pd.Series(['Tom', 'William Rick', 'John', 'Alber@t', np.nan, '1234','SteveSmith'])

print s
print "                                       "
print s.str.lower()
print "                                       "
print s.str.upper()
print "                                       "
print s.str.len()
print "                                       "
print "Adding String "
print s.str.cat(sep='_')



print "                                       "
print "                                       "
print "Contains match "

s = pd.Series(['Tom ', ' William Rick', 'John', 'Alber@t'])
print s.str.contains(' ')

print "Replace "
print "                                       "
print "                                       "


print s.str.replace('@','$')


s = pd.Series(['Tom ', ' William Rick', 'John', 'Alber@t'])

print "                                       "
print "                                       "
print ("The number of 'm's in each string:")
print s.str.count('R')
print s.str.contains('r')
print "                                       "
print "                                       "
print ("Starts with:")
print s.str.startswith('J')
print ("Starts with:")
print s.str.endswith('t')


s = pd.Series(['Tom ', ' William Rick', 'John', 'Alber@t'])

print s.str.find('e')

# "-1" indicates that there no such pattern available in the element.


s = pd.Series(['Tom ', ' William Rick', 'John', 'Alber@t'])

print s.str.findall('e')


#Null list([ ]) indicates that there is no such pattern available in the element.

s = pd.Series(['Tom', 'William Rick', 'John', 'Alber@t'])
print s.str.swapcase()


print s.str.islower()
# to validate full string in lower 

print s.str.isupper()
# to validate full string in upper

print s.str.isnumeric()
# to validate full string in Numeric

euler

python

# Hello World program in Python
# Euler method in Python - 
from __future__ import division
from math import exp
import matplotlib.pyplot as plt
import numpy as np

h=0.01
x0=0
y0=1
xmax=4
x=x0
y=y0

print "Euler method\n"
puntsEuler=[]
while x<=xmax:
    puntsEuler.append((x,y))
    print x,y
    k1=(-2*x**3+12*x**2-20*x+8.5)
    y = y + h*k1
    x = x + h
#puntsEuler.append((x,y))
print x,y
print puntsEuler


print '===   Euler   ===='
for i in range(len(puntsEuler)):
    print puntsEuler[i][0],' --> ',puntsEuler[i][1]
print
print '============='


# dibuixant els punts i la solucio 

def f(z):
    return -0.5*z**4+4*z**3-10*z**2+8.5*z+1

te, eu = zip(*puntsEuler)
#tr, rk = zip(*puntsRK)

t1 = np.arange(x0, xmax, h/10)

plt.plot(te,eu,'b-',marker='o')
#plt.plot(tr,rk,'g-',marker='*')
plt.plot(t1,f(t1),'r')
plt.show()

MyProj

python

# Hello World program in Python
    
print "Hello World!\n"

test

python

# Hello World program in Python
    
print "Hello World!\n"

Execute Python Online

python

def find_nth(haystack, needle, n):
    start = haystack.find(needle)
    print "Haystack"
    while start >= 0 and n > 1:
        
        start = haystack.find(needle, start+len(needle))
        print "start :"+str(start)
        print "N: " + str(n)
        n -= 1
    return start
   
def parseSQLFn(inSentence):
  
  sentence = inSentence
  numOpen = sentence.count('(');
  print "sentence count"+str(numOpen)
  ctrOpen = 0
  i = 0
  subSentence = sentence
  missingStr = 0
  finSentence = ''
 
  if numOpen == 0:
    finSentence = inSentence
    return finSentence
 
  while i < numOpen*2:
    print 'i'+ str(i)
    varOpen = subSentence.find('(')
    varClose = subSentence.find(')')
    print 'VAR OPEN'+str(varOpen)
    print 'Var Close'+str(varClose)
   
    # Break condition 1: Open paranthesis ends
    if varOpen < 0:
      j = 0
      
      while j < ctrOpen:
        # Get the End of str
        endOfStr = find_nth(subSentence,')',ctrOpen)
        print "EoS "+str(endOfStr)
        endOfStr+= missingStr + i + 1
        print "EoS "+str(endOfStr)
        ctrOpen=0
     
      finSentence = sentence[:endOfStr]
      # print("finSentence = " + finSentence)
      print "Fin String "+finSentence
      return finSentence
     
    if varOpen < varClose:
      subSentence = subSentence[varOpen+1:]
      print "Subsentence " + subSentence
      missingStr = missingStr + varOpen
      print "Missing str "+str(missingStr)
      ctrOpen+=1
     
    elif varOpen > varClose:
      subSentence = subSentence[varClose+1:]
      print "Subsentence " + subSentence
      missingStr = missingStr + varClose
      print "Missing str "+str(missingStr)
      ctrOpen-=1
      
    i=i+1
   
    # break condition 2: All paranthesis closed but have some tail
    if ctrOpen == 0:
      print "IN CtrOpen"
      finSentence = sentence[:missingStr+i]
      print("finSentence = " + finSentence)
      return finSentence

parseSQLFn('''to_char(sd_sdfdfc(ASS(ddnbcjdbsc_snsjdc),jdchuiadcu)))hguyuy''')

Execute Python Online

python

# Hello World program in Python
    
print "Hello World!\n"

Execute Python Online

python

import math   # This will import math module

x = 1
y = 0
while True:
    print(x)
    print(math.floor(math.log10(x))+1)
    y=y+(math.floor(math.log10(x))+1)
    print(y)
    x += 1
    if y == 2007:
        break

2007_v1

python

import math   # This will import math module

x = 1
y = 0
while True:
    print(x)
    print(math.floor(math.log10(x))+1)
    y=y+(math.floor(math.log10(x))+1)
    print(y)
    x += 1
    if y == 2007:
        break

Speed Date Event

python

class S_D:
    def __init__(self, price, number): 
        self.price= price
        self.number= number
    
    def performance(self):
        if self.number >22:
            print ('Event was a hit!')
        elif 14<= self.number <= 22:
            print ('Event was good')
        else:
            print('Event was a bust :(')

###Creating first instance
Event1= S_D(15,13)
Event1.performance()

Praise GOD

python

# Hello World program in Python
    
print "Hello World!\n"

Follow

Newsletter