class_docstr: Print trade level information
code: def __call__(self, target):
      flows = target.flows.loc[target.now]
      # Check that sub-strategy is active (and not paper trading, which is always active)
      if (target.capital > 0 or flows != 0) and target.parent != target:
          if flows:
              fmt_str = "{name:>33}: Price = {price:>6.2f}, Value = {value:>10,.0f}, Flows = {flows:>8,.0f}"
          else:
              fmt_str = "{name:>33}: Price = {price:>6.2f}, Value = {value:>10,.0f}"
          print(
              fmt_str.format(
                  now=target.now,
                  name=target.name,
                  price=target.price,
                  value=target.value,
                  flows=flows,
              )
          )
      return True
  
imports: from copy import deepcopy
  from future.utils import iteritems
  from datetime import date
  import pandas
  import numpy
  import bt
label_desc: Use image node_id 1 for calling the DebugTradeLevel obj's underlying member method code with example usage: obj.__call__(target) and returns: True