Python 3:

Parsing and Manipulating XML Data An online plant distributor has recently experienced a shortage in its supply of Anemone plants such that the price has increased by 20%. Their plant catalog is maintained in an XML file and they need a Python utility to find the plant by name, read the current price, change it by the specified percentage, and update the file. Writing this utility is your assignment. Using Pythons ElementTree XML API, write a Python program to perform the following tasks below. Note that your programs execution syntax must be as follows: python xmlparse.py plant_catalog.xml plantName percentChange 1. Using ElementTree, read in this assignments XML file plant_catalog.xml specified by a command line parameter as shown above. 2. Find the plant by the name passed in as an argument on the command line (plantName above).  3. Once found, read the current price and adjust it by the command line argument  percentChange. Note: that this value could be anything in the range of -90 < percentChange < 100. For example, if you run your script as follows:  python plant_catalog.xml "Greek Valerian" -20 with the original XML containing:   Greek Valerian Polemonium caeruleum Annual Shade 4.36 071499  The resulting file should contain:   Greek Valerian Polemonium caeruleum Annual Shade 3.4880000000000004 071499  XML Code to work with:  

  Bloodroot Sanguinaria canadensis 4 Mostly Shady 2.44 031599   Columbine Aquilegia canadensis 3 Mostly Shady 9.37 030699   Marsh Marigold Caltha palustris 4 Mostly Sunny 6.81 051799   Cowslip Caltha palustris 4 Mostly Shady 9.90 030699   Dutchman's-Breeches Dicentra cucullaria 3 Mostly Shady 6.44 012099   Ginger, Wild Asarum canadense 3 Mostly Shady 9.03 041899   Hepatica Hepatica americana 4 Mostly Shady 4.45 012699   Liverleaf Hepatica americana 4 Mostly Shady 3.99 010299   Jack-In-The-Pulpit Arisaema triphyllum 4 Mostly Shady 3.23 020199   Mayapple Podophyllum peltatum 3 Mostly Shady 2.98 060599   Phlox, Woodland Phlox divaricata 3 Sun or Shade 2.80 012299   Phlox, Blue Phlox divaricata 3 Sun or Shade 5.59 021699   Spring-Beauty Claytonia Virginica 7 Mostly Shady 6.59 020199   Trillium Trillium grandiflorum 5 Sun or Shade 3.90 042999   Wake Robin Trillium grandiflorum 5 Sun or Shade 3.20 022199   Violet, Dog-Tooth Erythronium americanum 4 Shade 9.04 020199   Trout Lily Erythronium americanum 4 Shade 6.94 032499   Adder's-Tongue Erythronium americanum 4 Shade 9.58 041399   Anemone Anemone blanda 6 Mostly Shady 8.86 122698   Grecian Windflower Anemone blanda 6 Mostly Shady 9.16 071099   Bee Balm Monarda didyma 4 Shade 4.59 050399   Bergamot Monarda didyma 4 Shade 7.16 042799   Black-Eyed Susan Rudbeckia hirta Annual Sunny 9.80 061899   Buttercup Ranunculus 4 Shade 2.57 061099   Crowfoot Ranunculus 4 Shade 9.34 040399   Butterfly Weed Asclepias tuberosa Annual Sunny 2.78 063099   Cinquefoil Potentilla Annual Shade 7.06 052599   Primrose Oenothera 3 - 5 Sunny 6.56 013099   Gentian Gentiana 4 Sun or Shade 7.81 051899   Blue Gentian Gentiana 4 Sun or Shade 8.56 050299   Jacob's Ladder Polemonium caeruleum Annual Shade 9.26 022199   Greek Valerian Polemonium caeruleum Annual Shade 4.36 071499   California Poppy Eschscholzia californica Annual Sun 7.89 032799   Shooting Star Dodecatheon Annual Mostly Shady 8.60 051399   Snakeroot Cimicifuga Annual Shade 5.63 071199   Cardinal Flower Lobelia cardinalis 2 Shade 3.02 022299